Delete Record From DataTable in asp.net C#

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C#

ASP.NET

good Morning,

my aspx file is given below.

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" Runat="Server">
    <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </asp:ToolkitScriptManager>
         <div class="ContentClass">
         <asp:TabContainer ID="AssetTransactionTab" runat="server" ActiveTabIndex="0" CssClass="Tab" ScrollBars="Vertical"   Width="794px" Height="290px">
         <asp:TabPanel ID="NewTransaction"  runat="server"  ScrollBars="Auto" HeaderText="New Transaction" >
         <ContentTemplate>
  <div align="center" >
             <asp:UpdatePanel ID="GridUpdatePanel" runat="server">
             <ContentTemplate>
             <asp:GridView ID="GriDisplay" runat="server" onrowcommand="GriDisplay_RowCommand" onrowdeleting="GriDisplay_RowDeleting"  Height="162px">
            <Columns>
            <asp:TemplateField>
            <ItemTemplate>
            <asp:LinkButton ID="BtnDelete" CommandArgument='' CommandName="Delete" runat="server">Remove</asp:LinkButton>
            </ItemTemplate>
            </asp:TemplateField>
            </Columns>
           </asp:GridView>
             </ContentTemplate>
             </asp:UpdatePanel>
             </div>
         </div>
         </ContentTemplate>
         </asp:TabPanel>
         </asp:TabContainer>
         </div>
</asp:Content>

and my aspx.cs code is given below.

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            
                DataTable dtToGrid = new DataTable();
                dtToGrid.Columns.Add("Asset", typeof(System.Int16));
                dtToGrid.Columns.Add("Employee", typeof(string));
                dtToGrid.Columns.Add("Location", typeof(string));
                dtToGrid.Columns.Add("Supplier",typeof(string));
                dtToGrid.Columns.Add("IssuedDate", typeof(string));
                Session["dtToGrid"] = dtToGrid;
          }
}
  protected void btnAdd_Click(object sender, EventArgs e)
    {
            DataTable dtToGrid = (DataTable)Session["dtToGrid"];
            DataRow drToGrid = dtToGrid.NewRow();
            drToGrid["Asset"] = ddlAssetID.SelectedValue;
            drToGrid["Employee"] = ddlEmployeeID.SelectedItem;
            drToGrid["Location"] = ddlLocationID.SelectedItem;
            drToGrid["Supplier"] = ddlSupplierID.SelectedItem;
            drToGrid["IssuedDate"] = txtIssuedReceivedDate.Text.Trim();
            dtToGrid.Rows.Add(drToGrid);
            GriDisplay.DataSource = dtToGrid;
            GriDisplay.DataBind();
          
          
          }

protected void GriDisplay_RowCommand(object sender, GridViewCommandEventArgs e)
  {
      if (e.CommandArgument == "Delete")
      {
          int ID = Convert.ToInt32(e.CommandArgument);
          DataTable updt = (DataTable)Session["dtToGrid"];
          int i = 0;
          while (i!=0)
          {
          if (Convert.ToInt32(updt.Rows[i]["Asset"]) == ID)
          updt.Rows[i].Delete();
          i++;
          }
      }
  }
  protected void GriDisplay_RowDeleting(object sender, GridViewDeleteEventArgs e)
  {


  }

Addition Record is working But Delete (Remove) not working.
Please Help Me how can i Remove Record from Gridview And Data Table and Also assist me how to insert that record into sql DataBase Table .

thanks.