Hello, excuse me for my English I am French ...
I try to call in my code the RadUpload control with ID = radupload1
I tried several methods to find the RadUpload control example:
Dim RadUpload1 As RadUpload = CType(MyUserControl.FindControl("RadUpload1"), RadUpload)
but I get the error message:
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Check the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
1. here is my code aspx:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="admin_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></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<ajaxsettings>
<telerik:AjaxSetting AjaxControlID="RadGrid1">
<updatedcontrols>
<telerik:AjaxUpdatedControl ControlID="RadGrid1" />
</updatedcontrols>
</telerik:AjaxSetting>
</ajaxsettings>
</telerik:RadAjaxManager>
<telerik:RadScriptManager ID="RadScriptManager1" runat="server">
</telerik:RadScriptManager>
<telerik:RadGrid ID="RadGrid1" runat="server" GridLines="None" AutoGenerateColumns="false" DataSourceID="SqlDataSource1" AutoGenerateEditColumn="true" >
<MasterTableView Width="100%" DataKeyNames="idActualite" CommandItemDisplay="Top"
EditMode="PopUp">
<Columns>
<telerik:GridTemplateColumn>
<HeaderTemplate>
<asp:TextBox ID="txtCodeNumber" runat="server" Width="39px" />
<asp:LinkButton ID="lnkAddCode" runat="server" Text="Add Bulk Code" OnClick="lnkAddCode_Click" />
</HeaderTemplate>
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#Bind("titre") %>' Width="39px" />
</ItemTemplate>
<EditItemTemplate>
<telerik:RadUpload ID="RadUpload1" runat="server" AllowedFileExtensions=".jpg,.jpeg" Skin="Black"></telerik:RadUpload>
<telerik:RadProgressArea ID="RadProgressArea1" runat="server"></telerik:RadProgressArea>
</EditItemTemplate>
</telerik:GridTemplateColumn>
</Columns>
</MasterTableView>
</telerik:RadGrid>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnGestion %>"
SelectCommand="SELECT * FROM [actualites] ORDER BY idActualite DESC" InsertCommand="INSERT INTO [actualites] ([titre], [descriptif], [dataImage]) VALUES (@titre, @descriptif, @dataImage) SET @InsertedID = SCOPE_IDENTITY()"
UpdateCommand="UPDATE [actualites] SET [titre] = @titre, [descriptif] = @descriptif, [dataImage] = @dataImage WHERE [idActualite] = @idActualite"
DeleteCommand="DELETE FROM [actualites] WHERE [idActualite] = @idActualite"
>
<InsertParameters>
<asp:Parameter Name="titre" Type="String" />
<asp:Parameter Name="descriptif" Type="String" />
<asp:Parameter Name="dataImage" DbType="Binary" />
<asp:Parameter Name="InsertedID" Type="Int32" Direction="Output" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="titre" Type="String" />
<asp:Parameter Name="descriptif" Type="String" />
<asp:Parameter Name="idActualite" Type="Int32" />
<asp:Parameter Name="dataImage" DbType="Binary" />
</UpdateParameters>
<DeleteParameters>
<asp:Parameter Name="idActualite" Type="Int32" />
</DeleteParameters>
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
2. here is my code aspx.vb:
Imports System
Imports System.Drawing
Imports System.Data
Imports System.Configuration
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI
'Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts
Imports System.Web.UI.HtmlControls
Imports System.Data.SqlClient
Imports System.Data.SqlTypes
Imports System.IO
Imports System.Collections.Generic
Imports System.Collections
Imports System.ComponentModel
Imports System.Web.SessionState
Imports Telerik.Web.UI
Partial Class admin_Default2
Inherits System.Web.UI.Page
Public txtCodeNumber As RadUpload
Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
End Sub
Protected Sub RadGrid1_InsertCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGrid1.InsertCommand
Dim MyUserControl As UserControl = CType(e.Item.FindControl(GridEditFormItem.EditFormUserControlID), UserControl)
Dim RadUpload1 As RadUpload = CType(MyUserControl.FindControl("RadUpload1"), RadUpload)
End Sub
End Class
Thanks for your help,
2 Answers, 1 is accepted
Rank 2
Try the following code to access RadUpload in grid.
VB:
Protected Sub RadGrid1_InsertCommand(sender As Object, e As GridCommandEventArgs) Dim item As GridEditFormInsertItem = DirectCast(e.Item, GridEditFormInsertItem) Dim up As RadUpload = DirectCast(item.FindControl("RadUpload1"), RadUpload)End SubThanks,
Shinu.
Rank 1
thank you for your answer, it works