Retrieve Row Index ID from GridView

Using Gridview and you want to retrieve row index id (in consequence the Data value ID of it).
here is the trick.

HTML

<asp:GridView ID="FilmList" DataKeyNames="FilmID" OnRowCommand="FilmList_RowCommand" runat="server" AutoGenerateColumns="false" >

<

Columns>
<asp:TemplateField>

<

asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/Images/submyscore.jpg" CommandArgument="<%# Container.DataItemIndex %>" CommandName="Vote" /> </td>

</

ItemTemplate>
</asp:TemplateField>

CODE.

protected

void FilmList_RowCommand(object sender, GridViewCommandEventArgs e)

{

//reference to http://msdn2.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.rowcommand.aspx

if (e.CommandName == "Vote")

{

// Convert the row index stored in the CommandArgument

// property to an Integer.

int index = Convert.ToInt32(e.CommandArgument); // This is the Gridview Row Index!

int filmid = (int)FilmList.DataKeys[index]["FilmID"]; //The value of FilmID;

// Retrieve the row that contains the button clicked

// by the user from the Rows collection.

GridViewRow row = FilmList.Rows[index];

Label lbl = (Label)row.FindControl("Label1");

lbl.Text =

"Dected row index!: " + index.ToString() + " and FilmID is:" + filmid.ToString() ;

}

}