Hi,
I have problem with dynamically generated columns in RadGrid. Each postback adds me same count of empty columns. Here is my test code.
thx for help
DK
Code-behind
I have problem with dynamically generated columns in RadGrid. Each postback adds me same count of empty columns. Here is my test code.
thx for help
DK
<%@ Page Title="" Language="C#" AutoEventWireup="true" CodeBehind="Test.aspx.cs" Inherits="Test.TestGrid" %> <head runat="server" /> <form id="frm" runat="server"><asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:HiddenField ID="hfMinYear" runat="server" /><asp:HiddenField ID="hfMaxYear" runat="server" /> <telerik:RadGrid ID="grdForecast" AllowFilteringByColumn="false" AllowMultiRowSelection="true" AllowSorting="true" AutoGenerateColumns="false" EnableViewState="true" OnNeedDataSource="grdForecast_NeedDataSource" runat="server"> <ClientSettings EnableRowHoverStyle="true"> <Selecting AllowRowSelect="True" /> </ClientSettings> <MasterTableView DataKeyNames="ForecastId" EnableColumnViewState="false"><HeaderStyle Wrap="false" /><ItemStyle Wrap="false" /> <Columns> <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" /> <telerik:GridBoundColumn DataField="ValueTotal" DataFormatString="{0:0.##}" HeaderText="Total Value" HeaderStyle-Wrap="false" ItemStyle-HorizontalAlign="Right" ItemStyle-Wrap="false" ReadOnly="True" UniqueName="ValueTotal"></telerik:GridBoundColumn> </Columns> </MasterTableView> </telerik:RadGrid> <asp:button id="ddd" text="Postback" runat="server" /></form>Code-behind
using System;using System.Data;using Telerik.Web.UI;namespace Test{ public partial class TestGrid : System.Web.UI.Page { protected int ProjectId; protected void Page_Init(object sender, EventArgs e) {// if (IsPostBack) { int MinYear = 2010, MaxYear = 2020; CreateColumns(MinYear, MaxYear); } } protected void Page_Load(object sender, EventArgs e) { } protected void CreateColumns(int MinYear, int MaxYear) { for (int i = MinYear; i <= MaxYear; i++) { grdForecast.MasterTableView.Columns.Add(new GridBoundColumn() { DataField = "Value" + i, DataFormatString = "{0:0.##}", HeaderText = "Value " + i, ReadOnly = true, UniqueName = "Value" + i }); } } protected void grdForecast_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e) { grdForecast.DataSource = new DataTable(); } }}1 Answer, 1 is accepted
0
Accepted
Hello Daniel,
You should created the columns on initial postback only. And when the grid is added declaratively, you should first add the newly created column and then set its properties:
Greetings,
Iana Tsolova
the Telerik team
You should created the columns on initial postback only. And when the grid is added declaratively, you should first add the newly created column and then set its properties:
GridBoundColumn column = new GridBoundColumn();grdForecast.MasterTableView.Columns.Add(column);column.DataField = "Value" + i; column.DataFormatString = "{0:0.##}";column.HeaderText = "Value " + i;column.ReadOnly = true;column.UniqueName = "Value" + i;Greetings,
Iana Tsolova
the Telerik team
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