Questions on UI for ASP.NET AJAX Forum

4 answers

203 views

RadPanelBar, ViewState off and PostBack problem

Hi
My app has ViewState disabled.
I have a panel bar with multiple items. Depending on some server side logic, I may hide some panel items.
The PanelBar loads fine.
However, on postback the wrong panel item opens.
Let's say I have 5 panel items and the server side logic hides the first one.
If I click Edit on the 4th item, on postback the 3rd item would open.

In the example below, no panel would be open on postback.
How can I fix it?

Thanks
Chen

<telerik:RadPanelBar ID="RadPanelBar1" Runat="server">

<Items>

<telerik:RadPanelItem runat="server" Text="Root RadPanelItem1">

</telerik:RadPanelItem>

<telerik:RadPanelItem runat="server" Text="Root RadPanelItem2" Selected="True">

</telerik:RadPanelItem>

<telerik:RadPanelItem runat="server" Text="Root RadPanelItem3">

<ContentTemplate>

<asp:FormView ID="FormView1" runat="server" DataSourceID="LinqDataSourcePayee"

DataKeyNames="id">

<EditItemTemplate>

firstName:

<asp:TextBox ID="firstNameTextBox" runat="server"

Text='<%# Bind("firstName") %>' />

<br />

lastName:

<asp:TextBox ID="lastNameTextBox" runat="server"

Text='<%# Bind("lastName") %>' />

<br />

<asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True"

CommandName="Update" Text="Update" />

<asp:LinkButton ID="UpdateCancelButton" runat="server"

CausesValidation="False" CommandName="Cancel" Text="Cancel" />

</EditItemTemplate>

<ItemTemplate>

firstName:

<asp:Label ID="firstNameLabel" runat="server" Text='<%# Bind("firstName") %>' />

<br />

lastName:

<asp:Label ID="lastNameLabel" runat="server" Text='<%# Bind("lastName") %>' />

<asp:LinkButton ID="EditButton" runat="server" CausesValidation="False"

CommandName="Edit" Text="Edit" />

</ItemTemplate>

</asp:FormView>

</ContentTemplate>

</telerik:RadPanelItem>

</Items>

</telerik:RadPanelBar>

Code behind:

protected void Page_Load(object sender, EventArgs e)

{

RadPanelBar1.Items[0].Visible = RadPanelBar1.Items[0].Enabled =false;

}

PanelBar

answered on 14 Feb 2012

1 answer

118 views

Upload.UploadedFiles empty after failed validation fails

Server-side validation finds an error in some other user's entries when they attempt to upload a file they've selected.

After the PostBack, the Upload file list is empty again. How do I preserve the list so the user need not enter it again? Do I have to programmatically save and restore it myself?

Upload (Obsolete)

answered on 14 Feb 2012

1 answer

58 views

Updatepanel inside a gride

Good Morning;

I have been very interest on the telerik asp.net components where it will be very useful in our system development. i have ask our manager to buy telerik for our development as we facing some problem on have update panel to be triggered using a component inside the grid.

I appreciate if somebody help me on getting this requirement implemented. also i have question for admin, is there training for telerik components which can be arranged by telerik team.

Hussian.

Grid

answered on 14 Feb 2012

2 answers

152 views

RadButton Without round corner

i Want RadButton looks like rectangle box , i don't want the rounded corners

Button

answered on 14 Feb 2012

3 answers

88 views

Changing the color

hi

How do i change the color using css on the header? I have attached a picture on the area i want to change. Thanks

Scheduler

answered on 14 Feb 2012

1 answer

66 views

Invoking an user control which contains a radwindow and a telerik grid

Hi,

I have an web user control having a radwindow and a radgrid within it. I want to invoke this user control from multiple pages which means I want to show the popup(radwindow) from multiple pages. Could you please guide me how i cn achieve this. Now I am creating an instance of the user control in the calling form and finding the radwindow from the user control.But it is not finding the radwindow from the user control.It is giving null when I am trying to find the radwindow from the user control.

Thanks.

Window

answered on 14 Feb 2012

3 answers

507 views

RadTreeView.DataBind() not working

The data binding event in this code isn't working any longer. I was testing a custom node template and using the code from this page (add and edit templates Runtime), but then removed all the code specific to the custom node template. At that point, the data stopped binding. I have added the code back, moved all of it to another page, but the data binding event doesn't seem to fire. Even with all the test code from the linked page above in my page, if I set a breakpoint in the DataBinding function it never gets hit. If I manually place a RadTreeView on the .aspx page it will display, but anything set on the server side will not.

I have checked to make sure List used to populate the tree has data, and this line (radTree.DataSource = treeNodes) works correctly. But the databind is still failing.

Any suggestions?

Thanks,
Peter

    
            namespace FQRSurvey.Controls  
        
            {  
        
               public partial class TreeViewControl : System.Web.UI.UserControl  
        
               {  
        
                  protected void Page_Load(object sender, EventArgs e)  
        
                  {  
        
                     if (!this.Page.IsPostBack)  
        
                     {  
        
                        //load tree view  
        
                        Survey survey = SurveyController.GetSurveyByID(new Guid("6C685FBA-1380-47B7-A911-DC89AF9479CF"));  
        
                        CreateRadTree(survey, questionTree);  
        
                     }  
        
                  }  
        
                  protected override void OnInit(EventArgs e)  
        
                  {  
        
                     questionTree.NodeTemplate = new SectionTemplate();  
        
                     //questionTree.NodeTemplate = new QuestionTemplate();  
        
                     //questionTree.NodeTemplate = new AnswerTemplate();  
        
                     base.OnInit(e);  
        
                  }  
        
                  protected void RadTreeView1_HandleDrop(object sender, RadTreeNodeDragDropEventArgs e)  
        
                  {  
        
                     RadTreeNode sourceNode = e.SourceDragNode;  
        
                     RadTreeNode destNode = e.DestDragNode;  
        
                     RadTreeViewDropPosition dropPosition = e.DropPosition;  
        
                     if (destNode != null)  
        
                     {  
        
                        if (sourceNode.TreeView.SelectedNodes.Count <= 1)  
        
                        {  
        
                           if (!sourceNode.IsAncestorOf(destNode))  
        
                           {  
        
                              sourceNode.Owner.Nodes.Remove(sourceNode);  
        
                              destNode.Nodes.Add(sourceNode);  
        
                           }  
        
                        }  
        
                        destNode.Expanded = true;  
        
                        sourceNode.TreeView.ClearSelectedNodes();  
        
                     }  
        
                  }  
        
                  private void CreateRadTree(Survey survey, RadTreeView radTree)  
        
                  {  
        
                     radTree.NodeTemplate = new SectionTemplate();  
        
                     if (!survey.Sections.Count.Equals(0))  
        
                     {  
        
                        List<TreeNode1> treeNodes = new List<TreeNode1>();  
        
                        Sections sections = survey.Sections;  
        
                        //Loop through Sections  
        
                        for (int i = 0; i < sections.Count; i++)  
        
                        {  
        
                           Section section = sections[i];  
        
                           //Create Section Node  
        
                           TreeNode1 sNode = new TreeNode1(section.SectionID.ToString(), String.Empty, section.SectionTitle, section.SectionStatus);  
        
                           treeNodes.Add(sNode);  
        
                           //Get Questions  
        
                           if (section.FirstQuestion != null)  
        
                           {  
        
                              Question q = section.FirstQuestion;  
        
                              string prevNode = String.Empty;  
        
                              if (q.PrevAnswer == null) prevNode = sNode.ID;  
        
                              else prevNode = q.PrevAnswer.AnswerID.ToString();  
        
                              //Create Question Node  
        
                              TreeNode1 qNode = new TreeNode1("q" + q.FriendlyID, prevNode, q.QuestionText, SurveyStatus.Active);  
        
                              //Create Answer Group  
        
                              treeNodes.Add(qNode);  
        
                           }  
        
                        }  
        
                        radTree.DataTextField = "Text";  
        
                        radTree.DataFieldID = "ID";  
        
                        radTree.DataFieldParentID = "ParentID";  
        
                        radTree.DataSource = treeNodes;  
        
                        radTree.DataBind();  
        
                     }  
        
                  }  
        
               }  
        
               internal class TreeNode1  
        
               {  
        
                  private string _id;  
        
                  private string _text;  
        
                  private SurveyStatus _status;  
        
                  private string _parentID;  
        
                  public string ID  
        
                  {  
        
                     get { return _id; }  
        
                     set { _id = value; }  
        
                  }  
        
                  public string ParentID  
        
                  {  
        
                     get { return _parentID; }  
        
                     set { _parentID = value; }  
        
                  }  
        
                  public string Text  
        
                  {  
        
                     get { return _text; }  
        
                     set { _text = value; }  
        
                  }  
        
                  public SurveyStatus Status  
        
                  {  
        
                     get { return _status; }  
        
                     set { _status = value; }  
        
                  }  
        
                  public TreeNode1(string id, string parentID, string text, SurveyStatus status)  
        
                  {  
        
                     _id = id;  
        
                     _text = text;  
        
                     _status = status;  
        
                     _parentID = parentID;  
        
                  }  
        
               }  
        
               class SectionTemplate : ITemplate  
        
               {  
        
                  public void InstantiateIn(Control container)  
        
                  {  
        
                     Label label1 = new Label();  
        
                     label1.Font.Size = 15;  
        
                     label1.DataBinding += new EventHandler(label1_DataBinding);  
        
                     container.Controls.Add(label1);  
        
                  }  
        
                  private void label1_DataBinding(object sender, EventArgs e)  
        
                  {  
        
                     Label target = (Label)sender;  
        
                     RadTreeNode node = (RadTreeNode)target.BindingContainer;  
        
                     string nodeText = (string)DataBinder.Eval(node, "Text");  
        
                     target.Text = nodeText;  
        
                  }  
        
               }

Update:
From additional digging and messing around, the problem relates to converting a Guid to a string to be used as the ID field. I'm not sure why it won't accept the Guid as a string, but using an int instead of string fixes the problem. Any reason convertinting a Guid to a string would cause the data to fail to bind without any errors?

TreeView

answered on 14 Feb 2012

1 answer

72 views

Check All text

How to change the text of first item "Check all which is generated automatically?

ComboBox

answered on 14 Feb 2012

1 answer

90 views

Access controls

How can i access checkbox in toolbar button click?
aspx:

<telerik:RadToolBar ID="RadTool" runat="server" AutoPostBack="true" onbuttonclick="RadTool_ButtonClick" >

<Items>

<telerik:RadToolBarButton runat="server" Text="Edit"></telerik:RadToolBarButton>

<ItemTemplate>

<asp:CheckBox ID="CheckBox1" runat="server" />

</ItemTemplate>

</telerik:RadToolBarButton>

</Items>

</telerik:RadToolBar>

ToolBar

answered on 14 Feb 2012

2 answers

196 views

Getting values by looping through RADGrid from OnCheckedChanged

I am using RADGrid probably a little differnt than the typical - edit one item, update, save, repeat. I am using the RadGrid mainly because of its ability to maintain state on postback from the server.
I am having trouble looping through the grid from a OnCheckChange function/process.

So I have a Parent / Child Grid setup. I do have more values assigned, but for simplicity I provided the sample above. What I am doing is when the check box within the Parent or Child grid is selected I am running a routine - but I am having trouble looping through the vaules. Below is what I am attempting. Can someone assist with where I am missing?





Public Sub CheckBoxParent(ByVal sender As System.Object, ByVal e As System.EventArgs)

For Each item As GridDataItem In rParent.Items

Dim myCheckbox As CheckBox = DirectCast(item.FindControl("CheckBoxParent"), CheckBox)

Dim hAttributeID As HiddenField = DirectCast(dataItem.FindControl("hAttributeID"), HiddenField)

' Child radGrid

Dim dg As Telerik.Web.UI.RadGrid = item.FindControl("radChild")

' trying to Loop through each DataGridItem of the child grid

For Each dgItem As GridDataItem In dg.Items

Next

End Sub

<telerik:RadGrid id="rParent" runat="server" AllowMultiRowSelection="True">

<MasterTableView ShowHeader="true" AutoGenerateColumns="false">

<Columns>

<telerik:GridTemplateColumn>

<HeaderTemplate></HeaderTemplate>

<ItemTemplate>

<asp:CheckBox id="CheckBoxParent" OnCheckedChanged="findScore"

AutoPostBack="True" runat="server"></asp:CheckBox>

<%# DataBinder.Eval(Container.DataItem, "KeyID") %>

<asp:HiddenField ID="hAttributeID" runat="Server" Value='<%# DataBinder.Eval(Container.DataItem, "AttributeID") %>' />

<telerik:RadGrid id="rChild" runat="server">

<MasterTableView ShowHeader="false" AutoGenerateColumns="false">

<Columns>

<telerik:GridTemplateColumn>

<ItemTemplate>

<%# DataBinder.Eval(Container.DataItem, "Description") %>

<%# DataBinder.Eval(Container.DataItem, "AttributeID") %>

<asp:CheckBox id="CheckBoxChild" OnCheckedChanged="findScore"

AutoPostBack="True" runat="server"></asp:CheckBox>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

<ClientSettings EnableRowHoverStyle="false" EnablePostBackOnRowClick="true" />

</telerik:RadGrid>

</ItemTemplate>

</telerik:GridTemplateColumn>

</Columns>

</MasterTableView>

</telerik:RadGrid

Grid

answered on 14 Feb 2012