Hi ,
I have a gridview with edit button and paging enabled , after clicking on edit all the controlls in specific row of gridview becomes editable .
now my problem is if user clicks on edit and changes data in sme controlls on grid and go to next page , changes data thr and again come back to first page , the data is not maintained on first page or on 2nd page .
can anyone pls tell me how to maintain the edited data using viewstate while paging .
Heres the code :
Gridview.aspx:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
Height="367px" EnableViewState="true"
onrowcancelingedit="GridView1_RowCancelingEdit"
onrowdeleting="GridView1_RowDeleting"
onrowediting="GridView1_RowEditing"
onrowupdating="GridView1_RowUpdating"
Width="535px" AllowPaging="True" AllowSorting="True"
onpageindexchanging="GridView1_PageIndexChanging" PageSize="4"
onsorting="GridView1_Sorting" onrowcommand="GridView1_RowCommand">
<Columns>
<asp:CommandField ButtonType="Button" ShowDeleteButton="True"
ShowEditButton="True" ShowSelectButton="True" />
<asp:BoundField DataField="ID" HeaderText="ID" ReadOnly="True" />
<asp:BoundField DataField="Name" HeaderText="Name" />
<asp:BoundField DataField="SalCode" HeaderText="SalCode" />
</Columns>
</asp:GridView>
<asp:Label ID="lbl_Error" runat="server"></asp:Label>
</form>
</body>
</html>
and gridview.aspx.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
public partial class _2ndGridView : System.Web.UI.Page
{
SqlConnection cn;
SqlCommand cmd;
SqlDataAdapter da;
DataSet Ds;
protected void Page_Load(object sender, EventArgs e)
{
cn = new SqlConnection("Data Source=INDPI2TC12;initial catalog=CEP;Persist Security Info=True;User ID=cepuser;Password=Atos123");
da = new SqlDataAdapter("Select * from GridTrial", cn);
Ds = new DataSet();
if (!IsPostBack)
{
Ds = GetDs();
BindGrid(Ds);
}
}
private DataSet GetDs()
{
da.Fill(Ds, "grid");
return Ds;
}
private void BindGrid(DataSet ds)
{
GridView1.DataSource = ds.Tables["grid"];
GridView1.DataBind();
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
Ds = GetDs();
BindGrid(Ds);
}
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int id, SalCode;
string Name;
id= Convert.ToInt32((GridView1.Rows[e.RowIndex].Cells[1].Text));
Name = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text;
SalCode = Convert.ToInt32(((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text);
try
{
cmd = new SqlCommand();
cmd.Connection = cn;
cmd.CommandText = "update GridTrial set Name=@NAME,SalCode=@SalCode where id=@ID";
cmd.Parameters.Add("@ID", id);
cmd.Parameters.Add("@Name", Name);
cmd.Parameters.Add("@SalCode", SalCode);
cn.Open();
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
finally
{
cn.Close();
}
GridView1.EditIndex = -1;
Ds = GetDs();
BindGrid(Ds);
}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
Ds = GetDs();
BindGrid(Ds);
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int id;
id = Convert.ToInt32((GridView1.Rows[e.RowIndex].Cells[1].Text));
try
{
cmd = new SqlCommand();
cmd.Connection = cn;
cmd.CommandText = "delete from GridTrial where id=@ID";
cmd.Parameters.Add("@ID", id);
cn.Open();
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
finally
{
cn.Close();
}
GridView1.EditIndex = -1;
Ds = GetDs();
BindGrid(Ds);
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
Ds = GetDs();
BindGrid(Ds);
}
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
lbl_Error.Text = GridView1.SortExpression.ToString();
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
}
}
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