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POTelerik Treelist NeedDataSource doesn't load data
 

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  1. POTelerik Treelist NeedDataSource doesn't load data
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    <p>I'm trying to load treelist, everything works well but i always see "No Records To Display".</p> <p>Here is the control:</p> <pre><code>&lt;telerik:RadTreeList ID="trlProductGroups" runat="server" AllowPaging="true" PageSize="5" DataKeyNames="ID" ParentDataKeyNames="PARENT_ID" AutoGenerateColumns="false" OnInsertCommand="trlProductGroups_InsertCommand" OnNeedDataSource="trlProductGroups_NeedDataSource" OnUpdateCommand="trlProductGroups_UpdateCommand" OnDeleteCommand="trlProductGroups_DeleteCommand"&gt; &lt;Columns&gt; &lt;telerik:TreeListEditCommandColumn UniqueName="InsertCommandColumn" ButtonType="ImageButton" HeaderStyle-Width="60px" ItemStyle-HorizontalAlign="Center" /&gt; &lt;telerik:TreeListEditCommandColumn UniqueName="EditCommandColumn" ButtonType="ImageButton"&gt; &lt;ItemStyle CssClass="MyImageButton" /&gt; &lt;/telerik:TreeListEditCommandColumn&gt; &lt;telerik:TreeListButtonColumn UniqueName="DeleteCommandColumn" Text="Delete" CommandName="Delete" ButtonType="ImageButton" /&gt; &lt;telerik:TreeListBoundColumn DataField="ID" UniqueName="ID" HeaderText="Grup ID" ReadOnly="true" /&gt; &lt;%-- &lt;telerik:TreeListTemplateColumn DataField="GROUP_NAME" UniqueName="GROUP_NAME" HeaderText="Grup Adı"&gt; &lt;EditItemTemplate&gt; &lt;asp:TextBox ID="txtGroupName" runat="server"&gt;&lt;/asp:TextBox&gt; &lt;/EditItemTemplate&gt; &lt;/telerik:TreeListTemplateColumn&gt;--%&gt; &lt;telerik:TreeListBoundColumn DataField="GROUP_NAME" UniqueName="GROUP_NAME" HeaderText="Grup Adı" /&gt; &lt;telerik:TreeListBoundColumn DataField="PARENT_ID" UniqueName="PARENT_ID" HeaderText="Ana Grup ID" ReadOnly="true" /&gt; &lt;/Columns&gt; &lt;/telerik:RadTreeList&gt; </code></pre> <p>And here is the NeedDataSource Code:</p> <pre><code> protected void trlProductGroups_NeedDataSource(object sender, TreeListNeedDataSourceEventArgs e) { WebAppTest.Objects.ProductGroups pGroups = new WebAppTest.Objects.ProductGroups(); DataTable dt = pGroups.SelectData(null, string.Empty); trlProductGroups.DataSource = dt; } </code></pre> <p>I can see the data in DataTable, but treelist wont load data. Is there any mistake i make?</p> <p>Thanks</p>
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    1. USmehmetserif
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    1. PO
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    1. COYour code is correct. It is not about RadScriptManager and RadAjaxLoadingPanel either. Could you post the screen shot of DataTable?
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      1. POTelerik Treelist NeedDataSource doesn't load data
      1. USWin
 

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