gridview update with a single click?

Posted by Krishnamanohar under ASP.NET on 4/22/2013 | Points: 10 | Views : 943 | Status : [Member] | Replies : 1
Hi Experts,
i have a gridview with 100 records .i made changes to 100 records.and i have a update button in a page then how update 100 records with update button click?
is it possible ?if yes then how?
Thanks in Advance
Krish




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Posted by: Satyapriyanayak on: 4/22/2013 [Member] [MVP] Silver | Points: 25

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Text;
namespace Editable_GridView_multiple_records
{
public partial class _Default : System.Web.UI.Page
{
string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

protected void btnUpdate_Click(object sender, EventArgs e)
{
StringBuilder strSql = new StringBuilder(string.Empty);

SqlConnection con = new SqlConnection(connStr);
SqlCommand cmd = new SqlCommand();

for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkUpdate = (CheckBox)
GridView1.Rows[i].Cells[0].FindControl("chkSelect");
if (chkUpdate != null)
{
if (chkUpdate.Checked)
{

string strID = GridView1.Rows[i].Cells[1].Text;
string strName = ((TextBox)
GridView1.Rows[i].FindControl("txtName")).Text;

string strLocation = ((TextBox)
GridView1.Rows[i].FindControl("txtLocation")).Text;

string strUpdate =
"Update Details set Name = '" + strName + "',Location = '" + strLocation + "' WHERE ID ='" + strID + "'";

strSql.Append(strUpdate);
}
}
}
try
{
cmd.CommandType = CommandType.Text;
cmd.CommandText = strSql.ToString();
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
string errorMsg = "Error in Updation";
errorMsg += ex.Message;
throw new Exception(errorMsg);
}
finally
{
con.Close();
}
UncheckAll();
}
private void UncheckAll()
{
foreach (GridViewRow row in GridView1.Rows)
{
CheckBox chkUncheck = (CheckBox)
row.FindControl("chkSelect");
TextBox txtname = (TextBox)
row.FindControl("txtName");
TextBox txtlocation = (TextBox)
row.FindControl("txtLocation");
chkUncheck.Checked = false;
txtname.ReadOnly = true;
txtlocation.ReadOnly = true;
txtname.ForeColor = System.Drawing.Color.Blue;
txtlocation.ForeColor = System.Drawing.Color.Blue;
}
}
protected void chkSelect_CheckedChanged
(object sender, EventArgs e)
{
CheckBox chkTest = (CheckBox)sender;
GridViewRow grdRow = (GridViewRow)chkTest.NamingContainer;
TextBox txtname = (TextBox)grdRow.FindControl
("txtName");
TextBox txtlocation = (TextBox)grdRow.FindControl
("txtLocation");
if (chkTest.Checked)
{
txtname.ReadOnly = false;
txtlocation.ReadOnly = false;
txtname.ForeColor = System.Drawing.Color.Black;
txtlocation.ForeColor = System.Drawing.Color.Black;
}
else
{
txtname.ReadOnly = true;
txtlocation.ReadOnly = true;
txtname.ForeColor = System.Drawing.Color.Blue;
txtlocation.ForeColor = System.Drawing.Color.Blue;
}
}

protected void Button1_Click(object sender, EventArgs e)
{
CheckState(true);
}

protected void Button2_Click(object sender, EventArgs e)
{
CheckState(false);
}
private void CheckState(bool p)
{

foreach (GridViewRow row in GridView1.Rows)
{
CheckBox chkcheck = (CheckBox)row.FindControl("chkSelect");

chkcheck.Checked = p;

}

}
}
}


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