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Maintaining RadGrid current page/row index after navigating away from Radgrid page.

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15 posts, 1 answers

gc_0620

246 posts

Member since:
Feb 2008

Posted 03 Oct 2012 Link to this post

I have a Radgrid on ASP.NET Form (RadControls for ASP.NET AJAX Q2 2012 SP2 with VS 2010) , which is bound to a Linq data source and set it to have 10 records per page , sorting, filtering is enabled. Also have a hyper a link column (Radgrid Mastertable Databound column) on the Radgrid, such that a user can click it & navigate to another external page (details.aspx) from the list. I am passing Master Table Primary Key that is Parent key of all rows in Detail Page. On the details page, they have "Back" button to return to the RadGrid page.

I am looking for sample code snippet on the Server/Client Side on how to specify the page/row index to set the RadGrid after data binding. The idea is to ensure the user navigates to the same Radgrid (Parent) page/row index they were originally on after exiting from details.aspx.

Thanks

gc_0620
Jayesh Goyani

2733 posts

Member since:
May 2010

Posted 04 Oct 2012 Link to this post

Hello,

protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            int CurrentPageIndex = 0;

            if (Session["CurrentPageIndex"] != null)

            {

                int.TryParse(Convert.ToString(Session["CurrentPageIndex"]), out CurrentPageIndex);

            }

            RadGrid1.CurrentPageIndex = CurrentPageIndex ;

        }

    }

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)

   {

       Session["CurrentPageIndex"] = RadGrid1.CurrentPageIndex;

       // OR

       if (e.CommandName.ToString().ToLower().IndexOf("page") >= 0)

       {

           Session["CurrentPageIndex"] = RadGrid1.CurrentPageIndex;

       }

   }

Thanks,
Jayesh Goyani
gc_0620

246 posts

Member since:
Feb 2008

Posted 04 Oct 2012 Link to this post

Sorry Jayesh,

It did not work. Basically I have 2 pages, Default.aspx and Default2.aspx. Each of the page has 2 Link buttons (LinkButtonDefault and LinkButtonDefault2) on top of Grid to Navigate between pages. Assuming if I am in Page 6 of Default.aspx and clicked Link button LinkButtonDefault to Navigate to Default2.aspx.

My intention is upon Navigate back from Default2.aspx (via its Link Button) to Default.aspx, Page 6 of Default.aspx will be the current page Index. But unfortunately its opening the 1st Page of Default.aspx.

gc_0620

_____________

Below is my Declaration of each Page:

Default.Aspx;

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">

    <title>Default.aspx </title>

</head>

<body class="BODY">

    <form runat="server" id="mainForm" method="post">

    <telerik:RadScriptManager ID="RadScriptManager1" runat="server" />

    

    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

        <AjaxSettings>

            <telerik:AjaxSetting AjaxControlID="RadGrid1">

                <UpdatedControls>

                    <telerik:AjaxUpdatedControl ControlID="RadGrid1" />

                </UpdatedControls>

            </telerik:AjaxSetting>

        </AjaxSettings>

    </telerik:RadAjaxManager>

    <asp:LinkButton ID="LinkButtonDefault" CausesValidation="false" OnClick="GotoDefault2_Click"

        runat="server">Go to Default2</asp:LinkButton>

    <br />

    <br />

    <telerik:RadGrid ID="RadGrid1" DataSourceID="SqlDataSource1" runat="server" ShowStatusBar="True"

        AutoGenerateColumns="False" AllowSorting="True" AllowPaging="True" PageSize="10"

        GridLines="None" AllowAutomaticDeletes="True" AllowAutomaticInserts="True" AllowAutomaticUpdates="True"

        OnItemUpdated="RadGrid1_ItemUpdated" OnItemDeleted="RadGrid1_ItemDeleted" OnItemInserted="RadGrid1_ItemInserted"

        OnInsertCommand="RadGrid1_InsertCommand" OnItemCreated="RadGrid1_ItemCreated"

        AllowFilteringByColumn="True" CellSpacing="0" Skin="Office2010Silver" OnItemCommand="RadGrid1_ItemCommand">

        <PagerStyle Mode="NumericPages"></PagerStyle>

        <ClientSettings>

            <Selecting AllowRowSelect="True" />

        </ClientSettings>

        <MasterTableView DataSourceID="SqlDataSource1" DataKeyNames="CustomerID" AllowMultiColumnSorting="True"

            Width="100%" CommandItemDisplay="Top" Name="Customers">

            <CommandItemSettings ExportToPdfText="Export to PDF"></CommandItemSettings>

            <RowIndicatorColumn Visible="True" FilterControlAltText="Filter RowIndicator column">

            </RowIndicatorColumn>

            <ExpandCollapseColumn Visible="True" FilterControlAltText="Filter ExpandColumn column">

            </ExpandCollapseColumn>

            <Columns>

                <telerik:GridEditCommandColumn ButtonType="ImageButton" UniqueName="EditCommandColumn">

                    <HeaderStyle Width="20px" />

                    <ItemStyle CssClass="MyImageButton" />

                </telerik:GridEditCommandColumn>

                <telerik:GridBoundColumn SortExpression="CustomerID" HeaderText="CustomerID" HeaderButtonType="TextButton"

                    DataField="CustomerID" UniqueName="CustomerID" MaxLength="5">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="ContactName" HeaderText="Contact Name" HeaderButtonType="TextButton"

                    DataField="ContactName" UniqueName="ContactName">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="CompanyName" HeaderText="Company" HeaderButtonType="TextButton"

                    DataField="CompanyName" UniqueName="CompanyName">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="Address" HeaderText="Address" HeaderButtonType="TextButton"

                    DataField="Address" UniqueName="Address">

                </telerik:GridBoundColumn>

                <telerik:GridButtonColumn ConfirmText="Delete this customer?" ButtonType="ImageButton"

                    CommandName="Delete" Text="Delete" UniqueName="DeleteColumn">

                    <HeaderStyle Width="20px" />

                    <ItemStyle HorizontalAlign="Center" CssClass="MyImageButton" />

                </telerik:GridButtonColumn>

            </Columns>

            <SortExpressions>

                <telerik:GridSortExpression FieldName="CompanyName"></telerik:GridSortExpression>

            </SortExpressions>

            <EditFormSettings>

                <EditColumn UniqueName="EditCommandColumn1" FilterControlAltText="Filter EditCommandColumn1 column">

                </EditColumn>

            </EditFormSettings>

        </MasterTableView>

        <FilterMenu EnableImageSprites="False">

        </FilterMenu>

    </telerik:RadGrid>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"

        DeleteCommand="DELETE FROM [Customers] WHERE [CustomerID] = @CustomerID" InsertCommand="INSERT INTO [Customers] ([CustomerID], [CompanyName], [ContactName], [Address]) VALUES (@CustomerID, @CompanyName, @ContactName, @Address)"

        SelectCommand="SELECT * FROM [Customers]" UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [ContactName] = @ContactName, [Address] = @Address WHERE [CustomerID] = @CustomerID">

        <DeleteParameters>

            <asp:Parameter Name="CustomerID" Type="String" />

        </DeleteParameters>

        <InsertParameters>

            <asp:Parameter Name="CustomerID" Type="String" />

            <asp:Parameter Name="CompanyName" Type="String" />

            <asp:Parameter Name="ContactName" Type="String" />

            <asp:Parameter Name="Address" Type="String" />

        </InsertParameters>

        <UpdateParameters>

            <asp:Parameter Name="CompanyName" Type="String" />

            <asp:Parameter Name="ContactName" Type="String" />

            <asp:Parameter Name="Address" Type="String" />

            <asp:Parameter Name="CustomerID" Type="String" />

        </UpdateParameters>

    </asp:SqlDataSource>

    <br />

    

    </form>

</body>

</html>

________________

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Drawing;

using Telerik.Web.UI;

public partial class _Default : System.Web.UI.Page

{

    private void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            int CurrentPageIndex = 0;

            if (Session["CurrentPageIndex"] != null)

            {

                int.TryParse(Convert.ToString(Session["CurrentPageIndex"]), out CurrentPageIndex);

            }

            RadGrid1.CurrentPageIndex = CurrentPageIndex;

        }

    }

    protected void RadGrid1_ItemUpdated(object source, Telerik.Web.UI.GridUpdatedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        string field = getFieldName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.KeepInEditMode = true;

            e.ExceptionHandled = true;

            DisplayMessage(item + " " + e.Item[field].Text + " cannot be updated. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " " + e.Item[field].Text + " updated");

        }

    }

    protected void RadGrid1_ItemInserted(object source, GridInsertedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.ExceptionHandled = true;

            DisplayMessage(item + " cannot be inserted. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " inserted");

        }

    }

    protected void RadGrid1_ItemDeleted(object source, GridDeletedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        string field = getFieldName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.ExceptionHandled = true;

            DisplayMessage(item + " " + e.Item[field].Text + " cannot be deleted. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " " + e.Item[field].Text + " deleted");

        }

    }

    protected void RadGrid1_InsertCommand(object source, GridCommandEventArgs e)

    {

    }

    protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)

    {

        GridEditableItem item = e.Item as GridEditableItem;

        if (item != null && item.IsInEditMode && item.ItemIndex != -1)

        {

            if (item.OwnerTableView.Name == ((RadGrid)sender).MasterTableView.Name)

            {

                (item.EditManager.GetColumnEditor("CustomerID").ContainerControl.Controls[0] as TextBox).Enabled = false;

            }

        }

    }

    private String getItemName(string tableName)

    {

        switch (tableName)

        {

            case ("Customers"):

                {

                    return "Customer";

                }

            case ("Orders"):

                {

                    return "Order";

                }



            default:

                return "";

        }

    }

    private String getFieldName(string tableName)

    {

        switch (tableName)

        {

            case ("Customers"):

                {

                    return "CustomerID";

                }

            case ("Orders"):

                {

                    return "OrderID";

                }



            default:

                return "";

        }

    }

    private void DisplayMessage(string text)

    {

        RadGrid1.Controls.Add(new LiteralControl(string.Format("<span style='color:red'>{0}</span>", text)));

    }

    protected void GotoDefault2_Click(object sender, EventArgs e)

    {

        Response.Redirect("Default2.aspx");

    }

    protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)

    {

        Session["CurrentPageIndex"] = RadGrid1.CurrentPageIndex;

    }

}

Default2.Aspx;

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>Default2.aspx </title>

    <style type="text/css">

        .MyImageButton

        {

            cursor: hand;

        }

        .EditFormHeader td

        {

            font-size: 14px;

            padding: 4px !important;

            color: #0066cc;

        }

    </style>

</head>

<body class="BODY">

    <form runat="server" id="mainForm" method="post">

    <telerik:RadScriptManager ID="RadScriptManager1" runat="server" />

    

    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">

        <AjaxSettings>

            <telerik:AjaxSetting AjaxControlID="RadGrid1">

                <UpdatedControls>

                    <telerik:AjaxUpdatedControl ControlID="RadGrid1" />

                </UpdatedControls>

            </telerik:AjaxSetting>

        </AjaxSettings>

    </telerik:RadAjaxManager>

    <asp:LinkButton ID="LinkButtonDefault2" OnClick="GotoDefault2_Click" runat="server">Go to Default Page</asp:LinkButton>

    <br />

    <br />

    <telerik:RadGrid ID="RadGrid1" DataSourceID="SqlDataSource1" runat="server" ShowStatusBar="true"

        AutoGenerateColumns="False" AllowSorting="True" AllowMultiRowSelection="False"

        PageSize="10" AllowPaging="True" GridLines="None" AllowAutomaticDeletes="True"

        AllowAutomaticInserts="True" AllowAutomaticUpdates="True" OnItemUpdated="RadGrid1_ItemUpdated"

        OnItemDeleted="RadGrid1_ItemDeleted" OnItemInserted="RadGrid1_ItemInserted" OnInsertCommand="RadGrid1_InsertCommand"

        OnItemCreated="RadGrid1_ItemCreated">

        <PagerStyle Mode="NumericPages"></PagerStyle>

        <MasterTableView DataSourceID="SqlDataSource1" DataKeyNames="CustomerID" AllowMultiColumnSorting="True"

            Width="100%" CommandItemDisplay="Top" Name="Customers">

            <Columns>

                <telerik:GridEditCommandColumn ButtonType="ImageButton" UniqueName="EditCommandColumn">

                    <HeaderStyle Width="20px" />

                    <ItemStyle CssClass="MyImageButton" />

                </telerik:GridEditCommandColumn>

                <telerik:GridBoundColumn SortExpression="CustomerID" HeaderText="CustomerID" HeaderButtonType="TextButton"

                    DataField="CustomerID" UniqueName="CustomerID" MaxLength="5">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="ContactName" HeaderText="Contact Name" HeaderButtonType="TextButton"

                    DataField="ContactName" UniqueName="ContactName">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="CompanyName" HeaderText="Company" HeaderButtonType="TextButton"

                    DataField="CompanyName" UniqueName="CompanyName">

                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn SortExpression="Address" HeaderText="Address" HeaderButtonType="TextButton"

                    DataField="Address" UniqueName="Address">

                </telerik:GridBoundColumn>

                <telerik:GridButtonColumn ConfirmText="Delete this customer?" ButtonType="ImageButton"

                    CommandName="Delete" Text="Delete" UniqueName="DeleteColumn">

                    <HeaderStyle Width="20px" />

                    <ItemStyle HorizontalAlign="Center" CssClass="MyImageButton" />

                </telerik:GridButtonColumn>

            </Columns>

            <SortExpressions>

                <telerik:GridSortExpression FieldName="CompanyName"></telerik:GridSortExpression>

            </SortExpressions>

        </MasterTableView>

    </telerik:RadGrid>

    <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindConnectionString %>"

        DeleteCommand="DELETE FROM [Customers] WHERE [CustomerID] = @CustomerID" InsertCommand="INSERT INTO [Customers] ([CustomerID], [CompanyName], [ContactName], [Address]) VALUES (@CustomerID, @CompanyName, @ContactName, @Address)"

        SelectCommand="SELECT * FROM [Customers]" UpdateCommand="UPDATE [Customers] SET [CompanyName] = @CompanyName, [ContactName] = @ContactName, [Address] = @Address WHERE [CustomerID] = @CustomerID">

        <DeleteParameters>

            <asp:Parameter Name="CustomerID" Type="String" />

        </DeleteParameters>

        <InsertParameters>

            <asp:Parameter Name="CustomerID" Type="String" />

            <asp:Parameter Name="CompanyName" Type="String" />

            <asp:Parameter Name="ContactName" Type="String" />

            <asp:Parameter Name="Address" Type="String" />

        </InsertParameters>

        <UpdateParameters>

            <asp:Parameter Name="CompanyName" Type="String" />

            <asp:Parameter Name="ContactName" Type="String" />

            <asp:Parameter Name="Address" Type="String" />

            <asp:Parameter Name="CustomerID" Type="String" />

        </UpdateParameters>

    </asp:SqlDataSource>

    <br />

    

    </form>

</body>

</html>

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Drawing;

using Telerik.Web.UI;

public partial class Default2 : System.Web.UI.Page

{

    private void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            //Setting Selected index prior to binding RadGrid:

            //If the index is in detail table, parent items will be expanded

            //automatically

            RadGrid1.SelectedIndexes.Add(1, 0, 1, 0, 0);

            //Index of 1, 0, 1, 0, 0 means:

            //1 - item with index 1 in the MasterTabelView

            //0 - detail table with index 0

            //1 - item with index 1 (the second item) in the first detail table

            //0 - 0 the third-level detail table

            //0 - the item with index 0 in the third-level table

        }

    }

    protected void RadGrid1_ItemUpdated(object source, Telerik.Web.UI.GridUpdatedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        string field = getFieldName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.KeepInEditMode = true;

            e.ExceptionHandled = true;

            DisplayMessage(item + " " + e.Item[field].Text + " cannot be updated. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " " + e.Item[field].Text + " updated");

        }

    }

    protected void RadGrid1_ItemInserted(object source, GridInsertedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.ExceptionHandled = true;

            DisplayMessage(item + " cannot be inserted. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " inserted");

        }

    }

    protected void RadGrid1_ItemDeleted(object source, GridDeletedEventArgs e)

    {

        string item = getItemName(e.Item.OwnerTableView.Name);

        string field = getFieldName(e.Item.OwnerTableView.Name);

        if (e.Exception != null)

        {

            e.ExceptionHandled = true;

            DisplayMessage(item + " " + e.Item[field].Text + " cannot be deleted. Reason: " + e.Exception.Message);

        }

        else

        {

            DisplayMessage(item + " " + e.Item[field].Text + " deleted");

        }

    }

    protected void RadGrid1_InsertCommand(object source, GridCommandEventArgs e)

    {

    }

    protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)

    {

        GridEditableItem item = e.Item as GridEditableItem;

        if (item != null && item.IsInEditMode && item.ItemIndex != -1)

        {

            if (item.OwnerTableView.Name == ((RadGrid)sender).MasterTableView.Name)

            {

                (item.EditManager.GetColumnEditor("CustomerID").ContainerControl.Controls[0] as TextBox).Enabled = false;

            }

            else if (item.OwnerTableView.Name == "Details")

            {

                (item.EditManager.GetColumnEditor("ProductID").ContainerControl.Controls[0] as TextBox).Enabled = false;

            }

        }

    }

    private String getItemName(string tableName)

    {

        switch (tableName)

        {

            case ("Customers"):

                {

                    return "Customer";

                }

            case ("Orders"):

                {

                    return "Order";

                }

            default:

                return "";

        }

    }

    private String getFieldName(string tableName)

    {

        switch (tableName)

        {

            case ("Customers"):

                {

                    return "CustomerID";

                }

            case ("Orders"):

                {

                    return "OrderID";

                }

            default:

                return "";

        }

    }

    private void DisplayMessage(string text)

    {

        RadGrid1.Controls.Add(new LiteralControl(string.Format("<span style='color:red'>{0}</span>", text)));

    }

    protected void GotoDefault2_Click(object sender, EventArgs e)

    {

        Response.Redirect("Default.aspx");

    }

}
Answer
Jayesh Goyani

2733 posts

Member since:
May 2010

Posted 05 Oct 2012 Link to this post

Hello,

Default.aspx.cs

protected void Page_Load(object sender, EventArgs e)

   {

       if (!IsPostBack)

       {

           int CurrentPageIndex = 0;

           if (Session["DefaultCurrentPageIndex"] != null)

           {

               int.TryParse(Convert.ToString(Session["DefaultCurrentPageIndex"]), out CurrentPageIndex);

           }

           RadGrid1.CurrentPageIndex = CurrentPageIndex ;

       }

   }

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)

   {



   }

   // Your Page Redirection button Click event

   protected void Button1_Click(object sender, EventArgs e)

   {

       Session["DefaultCurrentPageIndex"] = RadGrid1.CurrentPageIndex;

       Response.Redirect("YourPageName");

   }

Default2.aspx.cs

protected void Page_Load(object sender, EventArgs e)

   {

       if (!IsPostBack)

       {

           int CurrentPageIndex = 0;

           if (Session["Default2CurrentPageIndex"] != null)

           {

               int.TryParse(Convert.ToString(Session["Default2CurrentPageIndex"]), out CurrentPageIndex);

           }

           RadGrid1.CurrentPageIndex = CurrentPageIndex ;

       }

   }

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)

   {



   }

   // Your Page Redirection button Click event

   protected void Button1_Click(object sender, EventArgs e)

   {

       Session["Default2CurrentPageIndex"] = RadGrid1.CurrentPageIndex;

       Response.Redirect("YourPageName");

   }

Thanks,
Jayesh Goyani
gc_0620

246 posts

Member since:
Feb 2008

Posted 09 Oct 2012 Link to this post

Thanks Jayesh, your solution works

gc_0620
Sharon

12 posts

Member since:
Oct 2012

Posted 20 Feb 2013 Link to this post

Jayesh, I have a similar situation. Difference is the way I redirect to another page is with a GridHyperLinkColumn, where i set the hyperlink url in the codebehind as follows:

protected void RadGridLOC_ItemDataBound(object sender, GridItemEventArgs e)

        {

               //some code hre...

            if (e.Item is GridDataItem)

            { HyperLink hLink = (HyperLink)item["LinkColumn"].Controls[0];

                 hLink.NavigateUrl = "~/CreateLOC.aspx?in_loc=" + val1 + "&y_loc=" + val2 + "&type=edit";

                 // some code here...

}

}

In this case, where would I set the CurrentPageIndex? Thanks for any help.
Princy

17421 posts

Member since:
Mar 2007

Posted 21 Feb 2013 Link to this post

Hi Sharon,

You can use the same approach Jayesh suggested. You can save the current page index in ItemDataBound event like below.

C#:

protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            int CurrentPageIndex = 0;

            if (Session["DefaultCurrentPageIndex"] != null)

            {

                int.TryParse(Convert.ToString(Session["DefaultCurrentPageIndex"]), out CurrentPageIndex);

            }

            RadGrid1.CurrentPageIndex = CurrentPageIndex;

        }

    }

    protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)

    {

        if (e.Item is GridDataItem)

        {

            GridDataItem item = (GridDataItem)e.Item;

            HyperLink hLink = (HyperLink)item["LinkColumn"].Controls[0];

            Session["DefaultCurrentPageIndex"] = RadGrid1.CurrentPageIndex;

            hLink.NavigateUrl = "yourpage.aspx";

        }

    }

Thanks,
Princy.
gc_0620

246 posts

Member since:
Feb 2008

Posted 21 Feb 2013 Link to this post

Princy, Shinu & Jayesh, how are you doing?

Thanks a lot Princy & Jayesh for helping Sharon with her navigating controls. When I started Rad Controls about 5 yrs ago, Princy & Shinu and later Jayesh helped me a lot. Sincerely appreciate that.

All the best,

gc-0620
Sharon

12 posts

Member since:
Oct 2012

Posted 25 Feb 2013 Link to this post

Thanks. Princy's modified solution worked for me.
Sharon

12 posts

Member since:
Oct 2012

Posted 25 Feb 2013 Link to this post

I'm trying to go one more step by attempting to make the selected row be what it used to be before the user left the current page. WIth Jayesh and Princy's solution, I get to the previous page fine, now I want the previous row to persist. I tried something on my own using some code provided by Princy for another issue, and I nearly got it to work. Unfortunately, it is causing some undesirble side effect, which I dont know how to fix, although for the experts out there I'm sure it is evident. This issue being when I click on a row, it reverts back to the previous row, and then a second click will work. Thanks.

I set the CurrentRowIndex session variable to the current index.

protected void RadGridDetail_ItemDataBound(object sender, GridItemEventArgs e)

        {

            Session["CurrentRowIndex"] = Convert.ToInt32(RadGridLOC.SelectedIndexes[0]);    //getting current parent row index

            if (e.Item is GridDataItem)

            {

                GridDataItem item = (GridDataItem)e.Item;                        some code here....

protected void RadGridLOC_PreRender(object sender, EventArgs e)

        {

            if (Convert.ToInt32(Session["CurrentRowIndex"]) > -1)

            {

                GridDataItem item = (GridDataItem)RadGridLOC.Items[Convert.ToInt32(Session["CurrentRowIndex"])];

                item.Selected = true;

                RadGridDetail.Rebind();

                Session["CurrentRowIndex"] = -1;

            }

Thanks for any help.
Eyup
Admin

4014 posts

Posted 28 Feb 2013 Link to this post

Hi Sharon,

You can implement the approach demonstrated in the following topic to preserve selection upon databinding operations:
http://www.telerik.com/help/aspnet-ajax/grid-persist-selected-rows-client-sorting-paging-grouping-filtering.html
Please note that this approach requires the grid to be ajaxified:
http://www.telerik.com/help/aspnet-ajax/ajax-masterpage.html

To get the selected items through all pages on a single button click, you can implement the approach demonstrated in this code-library:
http://www.telerik.com/community/code-library/aspnet-ajax/grid/647760-get-selected-items-through-all-pages.aspx

I hope this helps.

Greetings,
Eyup
the Telerik team

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Waseem

85 posts

Member since:
Jun 2012

Posted 08 Nov 2013 Link to this post

Hi

In RadGrid, when i click on pageIndex 4 first time . it show CurrentpagesIndex 0.

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                int CurrentPageIndex = 0;
                if (Session["EmployerCurrentPageIndex"] != null)
                {
                    int.TryParse(Convert.ToString(Session["EmployerCurrentPageIndex"]), out CurrentPageIndex);
                }
                EmployerLinkGrid1.CurrentPageIndex = CurrentPageIndex;

                BindGrid();
            }
        }

string strCurrentPageIndex = EmployerLinkGrid1.MasterTableView.CurrentPageIndex.ToString();

protected void EmployerLinkGrid1_ItemCommand(object sender, GridCommandEventArgs e)
{
    Session["EmployerCurrentPageIndex"] = EmployerLinkGrid1.CurrentPageIndex;
}

I check it many way, when click on PagesIndex 4 , it should not show 0. everytime it show previous value.
When click on pageIndex 4, it show 0
then click on pageIndex 1, it show 3
Its really confusing.

Thanks,
Muhammad Waseem
the Telerik Team
Waseem

85 posts

Member since:
Jun 2012

Posted 08 Nov 2013 Link to this post

My goodness, i achieve my desired result by using OnPageIndexChanged.

OnPageIndexChanged="EmployerLinkGrid1_PageIndexChanged"

        protected void EmployerLinkGrid1_PageIndexChanged(object sender, Telerik.Web.UI.GridPageChangedEventArgs e)
        {
            string str = e.NewPageIndex.ToString();
        }

Thanks,
Muhammad Waseem
the Telerik Team
Umesh

2 posts

Member since:
May 2016

Posted 03 May 2016 Link to this post

I am using GridSettingsPersister. Why GridPageIndex is not part of the grid settings like sorting, filter etc.?
Eyup
Admin

4014 posts
Posted 06 May 2016 Link to this post

Hi Umesh,

The GridSettingsPersister class is outdated long ago and no longer supported. Now this requirement can be better achieved using RadGrid in combination with RadPersistenceFramework and using the correct time in the page life cycle to load the saved settings:
https://demos.telerik.com/aspnet-ajax/controls/examples/integration/persisting-grid-settings/defaultcs.aspx?product=grid
https://demos.telerik.com/aspnet-ajax/persistence-framework/examples/custom-storage-provider/defaultcs.aspx

I am also sending 2 RadGrid web sites to demonstrate practical implementations.

Regards,
Eyup
Telerik
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RadGridPreserveStateBetweenSessions.zip

RadGridFilterPreserveSessionModified.zip

Maintaining RadGrid current page/row index after navigating away from Radgrid page.

gc_0620

Jayesh Goyani

gc_0620

Jayesh Goyani

gc_0620

Sharon

Princy

gc_0620

Sharon

Sharon

Eyup

Waseem

Waseem

Umesh

Eyup