To my knowledge a column cannot be simply added to existing, need copy to a
new dataset, and many proved fast methods exist for this , Google for the
copy methods and select one.
On Sat, Feb 7, 2009 at 5:01 PM, Anju <[email protected]> wrote:
>
> hi,
> how to add new column to existing dataset table and fill that dataset
> with dropdownlist selected values. any one pls help me. when user
> check the checkbox,droplist enabled for selecting the values.
> dropdownlist values manually i added in datagrid.
>
> <asp:TemplateColumn HeaderText="Duration">
>
> <ItemTemplate>
>
> <asp:DropDownList ID="ddlduration"
> Runat="server"
> AutoPostBack="False" Enabled="False">
> <asp:ListItem
> Value="30" Selected="True"></asp:ListItem>
>
> <asp:ListItem
> Value="60"></asp:ListItem>
>
> <asp:ListItem
> Value="90"></asp:ListItem>
>
> </asp:DropDownList>
>
> </ItemTemplate>
>
> </asp:TemplateColumn>
>
> private void btnSubmit_Click(object sender, System.EventArgs e)
> {
> DataSet dscourse=(DataSet)ViewState["ds"];
> DataSet selected =
> ((DataSet)ViewState["ds"]).Clone() ;
>
> string total = lblTotalPrice.Text;
> foreach (DataGridItem dgItem in
> dgExtendCourse.Items)
> {
> HtmlInputCheckBox chkclick =
> (HtmlInputCheckBox)dgItem.FindControl
> ("chkselect");
> Label lblcource =
> (Label)dgItem.FindControl("lblCourseName");
> Label
> lblDays_Left=(Label)dgItem.FindControl("lblDaysLeft");
> DropDownList ddlDuration =
> (DropDownList)dgItem.FindControl
> ("ddlduration");
>
> if (chkclick.Checked==true)
> {
>
>
> foreach (DataRow row in
> dscourse.Tables[0].Rows)
> {
> if
> (row["coursename"].ToString() == lblcource.Text && row
> ["DaysLeft"].ToString()==lblDays_Left.Text)
> {
>
> selected.Tables[0].ImportRow(row);
> }
> }
> }
> }
> if (selected.Tables != null &&
> selected.Tables[0].Rows.Count > 0)
> {
> Session["selectedrow"] = selected;
> Session["totalprice"] =
> HidenTotal.Value.ToString();
>
> Response.Redirect("StudentRegistration.aspx");
> }
>
> }
>
--
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