grid view databind and want to know how to event capture in grid view

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hi i am cteate a grid view bound using eval metod from database values shows in grid view and i also taken edit, delete button mannually. now i want to open a new panel on click of edit button with rows id. how i can do this with grid view.
code is here as:

<asp:Panel ID="Pan_main2" runat="server" Width="100%">
        <asp:GridView runat="server" ID="grd"></asp:GridView>
            <asp:GridView runat="server" ID="gv" AutoGenerateColumns="false" PageSize="5"  
                GridLines="None" Width="80%"  align="center" 
               >
                <HeaderStyle BackColor="#84A8C9" />
                <AlternatingRowStyle BackColor="#F4FAFF" />
                <RowStyle BackColor="#DBECFB" />
                <Columns>
                    <asp:TemplateField>
                        <HeaderTemplate>
                            <font color="#F4FAFF"><b>Action</b></font>
                        </HeaderTemplate>
                        <ItemTemplate>
                            <asp:CheckBox runat="server" ID="chkid" Width="16" />
                            <asp:Button runat="server" Text="Edit" CommandName="edit" />
                            <asp:Button runat="server" Text="del" CommandName="del" />
                        </ItemTemplate>
                        <ItemStyle Height="12%" Width="13%" />
                    </asp:TemplateField>
                    <asp:TemplateField>
                        <HeaderTemplate>
                            <font color="#F4FAFF"><b>Name</b></font>
                        </HeaderTemplate>
                        <ItemTemplate>
                             <font color="#034f94">&nbsp;&nbsp;
                                 <%--<asp:Label ID="lblName" runat="server" Text='<%#Eval("Course_name") %>' />--%>
                                 <asp:Literal ID="ltrl" runat="server" Text='<%#Eval("Course_name") %>'></asp:Literal>
                             </font>
                        </ItemTemplate>
                        <ItemStyle Height="12%" HorizontalAlign="Left" Width="28%" />
                        <HeaderStyle HorizontalAlign="Left" />
                    </asp:TemplateField>
                    <asp:TemplateField>
                        <HeaderTemplate>
                            <font color="#F4FAFF"><b>Duration</b></font>
                        </HeaderTemplate>
                        <ItemTemplate>
                             <font color="#034f94">&nbsp;&nbsp;
                                 <asp:Literal ID="lt_fees" runat="server" Text='<%#Eval("Course_duration") %>'></asp:Literal>
                             </font>
                        </ItemTemplate>
                        <ItemStyle Height="12%" HorizontalAlign="Left" Width="28%" />
                        <HeaderStyle HorizontalAlign="Left" />
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>
                    
                </asp:Panel>

in .cs file i have code in try catch block with function and connection

MIDL

cmd.Connection.Open();
           gv.DataSource = cmd.ExecuteReader();
           gv.DataBind();

Thanks & REgards
Umesh Daiya

Posted 22-Feb-11 19:51pm

UD(IA)

Updated 22-Feb-11 19:57pm

nagendrathecoder

v2

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nagendrathecoder 23-Feb-11 1:57am

Edited for visibility.

Sunasara Imdadhusen 23-Feb-11 2:09am

what dose it mean "open a new panel"?

2 solutions

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m@dhu · Accepted Answer · 2011-02-22T20:13:00

Solution 1

Use gridview row command event

C#

Protected void ContactsGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
 if(e.CommandName=="Add")
 {
  //code to open new panel
 }
}

GridView.RowCommand Event[^]

Posted 22-Feb-11 20:13pm

m@dhu

Comments

UD(IA) 23-Feb-11 2:49am

i use this code but now i got this problem

Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

m@dhu 23-Feb-11 3:03am

Change to false in the page directive EnableEventValidation="false"

UD(IA) 23-Feb-11 2:49am

thanks for reply

Sandeep Mewara · Accepted Answer · 2011-02-22T20:18:00

Solution 2

Have a look at these:
GridView Event Handling[^]
Using the GridView Events[^]
GridView Events[^]

In order to do any operation on edit/delete or so, just associate that operation with the related event handler as described in the article samples.

Posted 22-Feb-11 20:18pm

Sandeep Mewara