I am developing a websie in asp.net and I have done a GridView Binding.when i run the website or program then i find this error:---
"error-exception has been thrown by the target of an invocation"
Give me the proper answer.
my sample code for the binding is given below:--
In aspx page:-
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False"
CellPadding="4" ForeColor="#333333" GridLines="Horizontal"
Width="743px">
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" HorizontalAlign="Center" />
<Columns>
<asp:TemplateField HeaderText="UserId" Visible="false">
<EditItemTemplate>
<asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("userid") %>'></asp:TextBox>
</EditItemTemplate>
<HeaderTemplate>
Field of Work2
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%# Bind("userid") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Field of Work2
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Bind("fieldofwork1") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Bind("fieldofwork1") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
From
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Bind("[[From]1]") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Bind("[[From]]1]") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
To
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Bind("[[To]]1]") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Bind("[[To]]1]") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Specialization
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Bind("specialization1") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Bind("specialization1") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<HeaderTemplate>
Organization
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Bind("organization1") %>'></asp:Label>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="TextBox3" runat="server" Text='<%#Bind("organization1") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#999999" />
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
</asp:GridView>