how to edit the column in gv without using any button?

Question

i have a gridview ..in this i am display the data using data table without
using data base..so it is showing the data..
now i want if i click on gridview cell so it should be editable and save the data in tada table
it is possible or not..
i want the code please dont share me link because i am stuck in my task...

design code ///
<div style="text-align: center; background-color: Silver; width: 100%">

        <asp:GridView ID="gridview1" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound"
         OnSelectedIndexChanged="OnSelectedIndexChanged" AlternatingRowStyle-BackColor="White"
            Font-Bold="true" Width="100%" class="gv">
            <Columns>
                <asp:BoundField DataField="Id" HeaderText="Id" />
                <asp:BoundField DataField="Name" HeaderText="Name" />
                <asp:BoundField DataField="City" HeaderText="City" />
            </Columns>

        </asp:GridView>
    </div>

ce code ////

protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("City") });
                dt.Rows.Add(1, "abc", "Lathur");
                dt.Rows.Add(2, "Rooppa", "Chennai");
                dt.Rows.Add(3, "Monika", "Bangalore");
                dt.Rows.Add(4, "Jyoti", "Chennai");
                dt.Rows.Add(5, "Radhika", "Jabalpur");

                gridview1.DataSource = dt;
                gridview1.DataBind();
            }
        }

Rajeesh Menoth · Answer

Hi EnableEventValidation=false

Rojalin Sahoo · Answer

so use following code to overcome that:

anjali khan · Answer

hi Rojalin thanks for the update...see if I run this application so I am getting this error like Invalid postback or callback argument. Event validation is enabled using in configuration or 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.

Rajeesh Menoth · Answer

Hi Source code with demo : http://www.aspsnippets.com/Articles/Edit-GridView-Row-on-Double-click-in-ASPNet.aspx

Rojalin Sahoo · Answer

To update datatable hold that in viewstate. To edit in gridview we need control like textbox so bind gridview with templetefield. Then on selected index event access the datatable from viewstate and modify according to the textbox value. Here is my sample code that may help you: Design Code: OnSelectedIndexChanged=gridview1_SelectedIndexChanged AlternatingRowStyle-BackColor=White Font-Bold=true Width=100% class=gv> '> '> CS Code: Bind grid view and hold the datatable in viewstate: protected void bindgrid() { DataTable dt = new DataTable(); dt.Columns.AddRange(new DataColumn[3] { new DataColumn(Id) new DataColumn(Name) new DataColumn(City) }); dt.Rows.Add(1 abc Lathur); dt.Rows.Add(2 Rooppa Chennai); dt.Rows.Add(3 Monika Bangalore); dt.Rows.Add(4 Jyoti Chennai); dt.Rows.Add(5 Radhika Jabalpur); ViewState[table] = dt; gridview1.DataSource = dt; gridview1.DataBind(); } Row databound to append onclick event in each row: protected void gridview1_RowDataBound(object sender GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.DataRow) { e.Row.Attributes[onclick] = Page.ClientScript.GetPostBackClientHyperlink(gridview1 Select$ + e.Row.RowIndex); e.Row.ToolTip = Click to select this row.; } } On selected index change: protected void gridview1_SelectedIndexChanged(object sender EventArgs e) { int id = Convert.ToInt32(gridview1.SelectedRow.Cells[0].Text); TextBox txname = gridview1.SelectedRow.FindControl(txtnm) as TextBox; TextBox txcity = gridview1.SelectedRow.FindControl(txtcity) as TextBox; DataTable dts = (DataTable)ViewState[table]; DataRow[] HRow = dts.Select(Id= +id); HRow[0][Name] = txname.Text; HRow[0][City] = txcity.Text; ViewState[table] = dts; gridview1.DataSource = dts; gridview1.DataBind(); }