Questions on UI for ASP.NET AJAX Forum

3 answers

1.4K+ views

How to make a GridNumericColumn on a grid to accept integer value only

Hi,

I posted this query back in April and then May, and received the following replies:

http://www.telerik.com/community/forums/aspnet/general-discussions/how-to-force-a-gridnumericcolumn-on-a-radgrid-to-accept-integer-values-only.aspx

http://www.telerik.com/community/forums/aspnet/grid/how-to-force-a-gridnumericcolumn-to-accept-integer-values-only.aspx

However, these replies still haven't solved the problem.

I have a grid with 3 columns:

Column 1 - a read only GridBoundColumn which displays a string

Column 2 - an editable GridNumericColumn which displays and accepts an integer value only

Column 3 - an editable GridNumericColumn which displays and accepts an double value only

The editable GridNumericColumn (Columns 2 & 3) will always be in edit mode.

The user can then any value on the editable columns.

However, I am still not able to make Column 2 to accept an integer value only (validation done on the client side) .

Column 3 will only accept a double value only.

When the user clicks the submit button on the page, each value of the editable column will be retrieved and stored on the business object.

Can anybody please help me on how to do this (i.e. to make an editable GridNumericColumn on a grid to accept an integer value)?

You can see the web page on http://www.gouw.ws/radgrid

The code is given below:

ASPX

=====

<div>

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

<telerik:RadGrid ID="radGrid" AutoGenerateColumns="false" AllowMultiRowEdit="true" AllowMultiRowSelection="true" GridLines="Vertical" OnItemCreated="radGrid_ItemCreated" OnPreRender="radGrid_PreRender" OnNeedDataSource="radGrid_NeedDataSource" runat="server">

</ClientSettings>

<telerik:GridBoundColumn DataField="Read" DataType="System.String" HeaderText="Read Only" HeaderStyle-HorizontalAlign="Right" ItemStyle-HorizontalAlign="Right" ReadOnly="true" UniqueName="Read" />

<telerik:GridNumericColumn DataField="Integer" DataFormatString="{0:N0}" DataType="System.Int32" HeaderText="Integer Only" HeaderStyle-HorizontalAlign="Right" ItemStyle-HorizontalAlign="Right" ReadOnly="false" UniqueName="Integer" />

<telerik:GridNumericColumn DataField="Dbl" DataFormatString="{0:#,##0.#0}" DataType="System.Double" HeaderText="Double Only" HeaderStyle-HorizontalAlign="Right" ItemStyle-HorizontalAlign="Right" ReadOnly="false" UniqueName="Dbl" />

</Columns>

</MasterTableView>

</telerik:RadGrid>

</div>

<asp:Button ID="button" OnClick="button_Click" Text="Submit" runat="server" />

</div>

</form>

ASPX.CS

=======

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

{

private ArrayList _data = new ArrayList();

protected void Page_Load(object sender, EventArgs e)

{

if (IsPostBack)

{

this._data = (ArrayList)Session["DATA"];

}

else

{

this._data = Data.Load();

Session["DATA"] = this._data;

}

protected void radGrid_ItemCreated(object sender, GridItemEventArgs e)

{

if (e.Item is GridDataItem && e.Item.IsInEditMode)

{

RadNumericTextBox numBox = (e.Item as GridDataItem)["Integer"].Controls[0] as RadNumericTextBox;

numBox.NumberFormat.DecimalDigits = 0;

numBox.NumberFormat.AllowRounding = false;

numBox.NumberFormat.KeepNotRoundedValue = true;

}

protected void radGrid_PreRender(object sender, System.EventArgs e)

{

foreach (GridDataItem item in this.radGrid.Items)

{

item.Edit = true;

}

this.radGrid.Rebind();

}

protected void radGrid_NeedDataSource(object source, GridNeedDataSourceEventArgs e)

{

this.radGrid.DataSource = this._data;

}

protected void button_Click(object sender, EventArgs e)

{

// To fetch the editable value on the grid and to store it into the business object

}

Thanks & regards,

Herman Gouw

Skype: hermangouw

General Discussions

answered on 06 Jul 2009

1 answer

167 views

need solution for parse error from server

Dear,

While I am getting the information from server database and put the data in the radgrid of a page in web browser, I got the error message

see the image.

A runtime error has occured. Do you wish to debug? line:15

Error: Sys.WebForms.PageRequestMAnagerParseErrorException;

The message received from the server could not be parsed, Common causes for this error are when response is modified by calls to Response.Write(), response filters, HttpModules, or Server trace is enabled.

Details: Error parsing near 'Telerik.Web.UI.2008'.

What is the reason and I want solution for it as early as possible?

Kind Regards,

Surya.

Kind Regards,

Surya.

Grid

answered on 06 Jul 2009

1 answer

122 views

[Solved] Custom Sorting Issue

Hi,

I want to do custom sorting for which I declared my RadGrid in aspx page as given below:

<telerik:RadGrid AutoGenerateColumns="False" ID="RadGrid1" DataSourceID="SqlDS" AllowFilteringByColumn="true"
            AllowPaging="True" AllowSorting="True" runat="server" Skin="Office2007" OnPageIndexChanged="RadGrid1_PageIndexChanged"
            OnPageSizeChanged="RadGrid1_PageSizeChanged" OnSortCommand="RadGrid_SortCommand">
            <PagerStyle Mode="NextPrevNumericAndAdvanced" />
            <MasterTableView AllowCustomPaging="true" AllowCustomSorting="true">
                <PagerStyle Mode="NextPrevNumericAndAdvanced" />
                <Columns>
                    <telerik:GridBoundColumn SortExpression="RollNo" HeaderButtonType="TextButton"
                        ShowSortIcon="true">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn SortExpression="StudentName" HeaderButtonType="TextButton" ShowSortIcon="true">
                    </telerik:GridBoundColumn>
                    <telerik:GridBoundColumn SortExpression="Address" HeaderButtonType="TextButton" ShowSortIcon="true">
                    </telerik:GridBoundColumn>
                </Columns>
            </MasterTableView>
    </telerik:RadGrid>
<asp:SqlDataSource ID="SqlDS" runat="server" ConnectionString="<%$connectionStrings:cemiConnectionString1%>">
</asp:SqlDataSource>

I want to generate GridBoundColumn's at runtime only as I know which columns I need to show at runtime only. so, I removed the three grid bound columns(RollNo,StudentName and Addresss) from design page. When I remove these columns and adding at runtime, postback is not calling onSortCommand event handler(RadGrid_SortCommand). If I add only RollNo gridboundcolumn then postback is calling my sort event handler for only RollNo column, for others(StudentName,Address) it not calling.

Could you please let me know what is the issue???

Thanks,
Mahesh

Grid

answered on 06 Jul 2009

1 answer

81 views

Help me to overcome this bug..... : Microsoft JScript runtime error

Hi All,
Im using Grid. In Grid when i click add and save button(In Edit Form) immediately the following javascript error thrown.
i dont know how to get out of this bug.

Error:

Microsoft JScript runtime error: Sys.InvalidOperationException: ScriptLoader.loadScripts cannot be called while the ScriptLoader is already loading scripts.

So, Guide me to get out of this bug.......

-Leo

Grid

answered on 06 Jul 2009

3 answers

126 views

Question about properties

Hi
i would like to know why i cant make telerik items visiable once i have declared them visable = false in page load and i would also like to know why i cant rebind to a grid when i have told the grid server side to rebind

Many thanks in advance

Grid

answered on 06 Jul 2009

6 answers

131 views

radWindow

hi,

i opened rad window, in this window i have controls etc'.
now, one of the control is button or hyperLink and when i push the button i want to see the result in the parent window no in the current radWindow, and i want to destroy the current window.

some one can help me, how to do this.

thanks in advance,
Udi

Window

answered on 06 Jul 2009

1 answer

149 views

Resize Problem

Hi

I am facing the problem in column rezising, i set the all of column width as fixed according to the table data. But the problem once i start to resize the column, it resizes the entire grid, so that i could not get the result as i expected.

I also set the ResizeGridOnColumnResize. But resize works on wothout giving Fixed column width.

Plz clarify me this doubt as soon as possible

Regards,
Appu

Grid

answered on 06 Jul 2009

1 answer

109 views

Struck With An Error in Grid

Error:

Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

So, i really dont know how to overcome this....

If any one can help me Pls...............

-Leo.

Grid

answered on 06 Jul 2009

3 answers

214 views

Viewstate of controls in CommandItemTemplate

It seems like view state of the controls put in CommandItemTemplate is not maintained. Also changing any of the properties in command event handler does not have any effect on the control. Here is the grid markup

                      <telerik:RadGrid ID="NotesGrid" EnableEmbeddedSkins="False" Skin="srunite" Width="100%"         
                            AllowSorting="False" AllowPaging="False" AllowMultiRowSelection="False" runat="server"         
                            GridLines="None" EnableViewState="true">         
                            <MasterTableView Width="100%" Summary="RadGrid table" AutoGenerateColumns="False"         
                                CommandItemDisplay="Top" TableLayout="Auto" GroupLoadMode="Client" AllowNaturalSort="false"         
                                AllowSorting="false">         
                                <AlternatingItemStyle BackColor="#eeeeee" />         
                                <CommandItemTemplate>         
                                    <div class="gridActions">         
                                        Notes         
                                        <asp:DropDownList ID="cmdFilterNoteType" runat="server" AutoPostBack="false" />         
                                        <asp:LinkButton ID="cmdShowAll" runat="server" AutoPostBack="true" CommandName="ShowAll"         
                                            Text="Show All"  Visible="false"/>         
                                        <asp:LinkButton ID="cmdShowLatest" runat="server" AutoPostBack="true" CommandName="ShowLatest"         
                                            Text="Show Latest"  />         
                                    </div>         
                                </CommandItemTemplate>         

and here are event handlers

                          protected void Page_Init(object sender, EventArgs e)         
                    {         
                        masterPage = (SiteMasterPages.BidModule)Master;         
                        presenter.SetModel(masterPage.CurrentBid);         
                     
                     
                        NotesGrid.ItemDataBound += new Telerik.Web.UI.GridItemEventHandler(NotesGrid_ItemDataBound);         
                        NotesGrid.ItemCommand += new GridCommandEventHandler(NotesGrid_ItemCommand);         
                    }         
                     

First problem:

See how I am finding the LinkButton and making it invisible, or assigning different text but when it renders nothing has changed. I can see it finding the control, I can debug and see that property has been changed, but it still renders these controls as if nothing has changed. Why?

                    protected void NotesGrid_ItemCommand(object source, GridCommandEventArgs e)          
                    {          
                        if (e.CommandName == "ShowLatest")          
                        {          
                            presenter.ShowLatestNotes();          
                            e.Item.FindControl("cmdShowLatest").Visible = false;          
                            ((LinkButton)e.Item.FindControl("cmdShowLatest")).Text = "sdasdfdsaf";          
                            e.Item.FindControl("cmdShowAll").Visible = true;          
                        }          
                        else if (e.CommandName == "ShowAll")          
                        {          
                            presenter.ShowAllNotes();          
                            e.Item.FindControl("cmdShowAll").Visible = false;          
                            e.Item.FindControl("cmdShowLatest").Visible = true;          
                        }          
                    }          

Second problem:

I have to rebind the dropdownlist that resides in commanditemtemplate on each postback as it does not maintain the viewstate. Why not?

  protected void NotesGrid_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)

        {

            if (e.Item.ItemType == GridItemType.CommandItem)

            {

                if (!Page.IsPostBack)

                {

                    DropDownList filter = e.Item.FindControl("cmdFilterNoteType") as DropDownList;

                    if (filter != null)

                    {

                        filter.DataSource = _notes.Select(x => x.Key);

                        filter.DataBind();

                        filter.Items.Insert(0, new ListItem("All"));

                    }

                }

            }

            else if (e.Item.ItemType == GridItemType.GroupHeader)

            {

                GridTableCell cell = e.Item.Controls[0] as GridTableCell;

                cell.Attributes.Add("noteType", ((System.Data.DataRowView)e.Item.DataItem).Row.ItemArray[0].ToString());

            }

        }

Grid

answered on 06 Jul 2009

3 answers

618 views

Collapsed hierarchy by default when grouped

Hi, I have a hierarchical Grid with ShowGroupPanel set to true. Our specs require that when the users group by a column, both the grouping and the hierarchy for each row inside that group should be collapsed. I can accomplish the grouping part by setting the GroupsDefaultExpanded property to false, but when users expand each grouping, each underlying row will have its details expanded by default. HierarchyDefaultExpanded = False only seems to work when no grouping is taking place. Is there any way I can accomplish this without posting back to the server, either by setting a property to a specific value or through client-side code? Thank you.

Grid

answered on 06 Jul 2009