I have one problem while transfer grdiview checkbox selecteed rows from one web form to another webform

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I have one problem while transfer grdiview checkbox selecteed rows from one web form to another webform

this is my code but it will transfer only one row i want to transfer all selected rows

WebForm1--------------------------

ASP.NET

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SelectedGrid.aspx.cs" Inherits="SelectedGrid" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1"  runat="server">
    <title>Add Delete Selected rows from one Gridview to another</title>
    <script type = "text/javascript">
<!--
        function Check_Click(objRef) {
            //Get the Row based on checkbox
            var row = objRef.parentNode.parentNode;

            //Get the reference of GridView
            var GridView = row.parentNode;

            //Get all input elements in Gridview
            var inputList = GridView.getElementsByTagName("input");

            for (var i = 0; i < inputList.length; i++) {
                //The First element is the Header Checkbox
                var headerCheckBox = inputList[0];

                //Based on all or none checkboxes
                //are checked check/uncheck Header Checkbox
                var checked = true;
                if (inputList[i].type == "checkbox" && inputList[i] != headerCheckBox) {
                    if (!inputList[i].checked) {
                        checked = false;
                        break;
                    }
                }
            }
            headerCheckBox.checked = checked;

        }
        function checkAll(objRef) {
            var GridView = objRef.parentNode.parentNode.parentNode;
            var inputList = GridView.getElementsByTagName("input");
            for (var i = 0; i < inputList.length; i++) {
                var row = inputList[i].parentNode.parentNode;
                if (inputList[i].type == "checkbox" && objRef != inputList[i]) {
                    if (objRef.checked) {
                        inputList[i].checked = true;
                    }
                    else {
                        if (row.rowIndex % 2 == 0) {
                            row.style.backgroundColor = "#C2D69B";
                        }
                        else {
                            row.style.backgroundColor = "white";
                        }
                        inputList[i].checked = false;
                    }
                }
            }
        }
//-->
</script>
</head>
<body>
    <form id="form1"  runat="server">
        <div>
            <asp:ScriptManager ID="ScriptManager2" runat="server">
            
            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                <contenttemplate>
                    <asp:GridView ID="gvAll" runat="server" AllowPaging="true" 
                        AlternatingRowStyle-BackColor="#C2D69B" AutoGenerateColumns="false" 
                        Font-Names="Arial" Font-Size="11pt" HeaderStyle-BackColor="green" 
                        OnPageIndexChanging="OnPaging" PageSize="10">
                        <columns>
                            <asp:TemplateField>
                                <HeaderTemplate>
                                    <asp:CheckBox ID="chkAll" runat="server" AutoPostBack="true" 
                                         onclick="checkAll(this);" />
                                </HeaderTemplate>
                                <itemtemplate>
                                    <asp:CheckBox ID="chk" runat="server" AutoPostBack="true" 
                                         onclick="Check_Click(this)" />
                                </itemtemplate>
                            
                            <asp:BoundField DataField="CustomerID" HeaderText="Customer ID" 
                                HtmlEncode="false" />
                            <asp:BoundField DataField="ContactName" HeaderText="Contact Name" 
                                HtmlEncode="false" />
                            <asp:BoundField DataField="City" HeaderText="City" HtmlEncode="false" />
                        </columns>
                        <alternatingrowstyle backcolor="#C2D69B" />
                    
                </contenttemplate>
            
            <asp:Button ID="Button1" runat="server" onclick="Button1_Click1" 
                Text="Button" />
            <br />

        </div>
    </form>
</body>
</html>

C#Code-------------------------------------For WebForm1

C#

using System;
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections;

public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindPrimaryGrid();
          
          
        }
    }

    private void BindPrimaryGrid()
    {
        string constr = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
        string query = "select CustomerID, ContactName, City from customers";
        SqlConnection con = new SqlConnection(constr);
        SqlDataAdapter sda = new SqlDataAdapter(query, con);
        DataTable dt = new DataTable();
        sda.Fill(dt);
        gvAll.DataSource = dt;
        gvAll.DataBind();  
    }

protected void OnPaging(object sender, GridViewPageEventArgs e)
{
    GetData();
    gvAll.PageIndex = e.NewPageIndex;
    BindPrimaryGrid();
    SetData(); 
}

private void GetData()
{
    DataTable dt;
    if (Session["SelectedRecords"] != null)
        
        dt = (DataTable)ViewState["SelectedRecords"];
    else
        dt = CreateDataTable();
    CheckBox chkAll = (CheckBox)gvAll.HeaderRow
                        .Cells[0].FindControl("chkAll");
    for (int i = 0; i < gvAll.Rows.Count; i++)
    {
        if (chkAll.Checked)
        {
            dt = AddRow(gvAll.Rows[i], dt);
        }
        else
        {
            CheckBox chk = (CheckBox)gvAll.Rows[i]
                            .Cells[0].FindControl("chk");
            if (chk.Checked)
            {
                dt = AddRow(gvAll.Rows[i], dt);
            }
            else
            {
                dt = RemoveRow(gvAll.Rows[i], dt);
            }
        }
    }
    Session["SelectedRecords"] = dt;
}

    private void SetData()
    {
        CheckBox chkAll = (CheckBox)gvAll.HeaderRow.Cells[0].FindControl("chkAll");
        chkAll.Checked = true;
        if (ViewState["SelectedRecords"] != null)
        {
            DataTable dt = (DataTable)ViewState["SelectedRecords"];
            for (int i = 0; i < gvAll.Rows.Count; i++)
            {
                CheckBox chk = (CheckBox)gvAll.Rows[i].Cells[0].FindControl("chk");
                if (chk != null)
                {
                    DataRow[] dr = dt.Select("CustomerID = '" + gvAll.Rows[i].Cells[1].Text + "'");
                    chk.Checked = dr.Length > 0; 
                    if (!chk.Checked)
                    {
                        chkAll.Checked = false;
                    }
                }
            }
        }
    }

private DataTable CreateDataTable()
{
    DataTable dt = new DataTable();
    dt.Columns.Add("CustomerID");
    dt.Columns.Add("ContactName");
    dt.Columns.Add("City");
    dt.AcceptChanges();
    return dt;
}

private DataTable AddRow(GridViewRow gvRow, DataTable dt)
{
    DataRow[] dr = dt.Select("CustomerID = '" + gvRow.Cells[1].Text + "'");
    if (dr.Length <= 0)
    {
        dt.Rows.Add();
        dt.Rows[dt.Rows.Count - 1]["CustomerID"] = gvRow.Cells[1].Text;
        dt.Rows[dt.Rows.Count - 1]["ContactName"] = gvRow.Cells[2].Text;
        dt.Rows[dt.Rows.Count - 1]["City"] = gvRow.Cells[3].Text;
        dt.AcceptChanges();
    }
    return dt;
}

private DataTable RemoveRow(GridViewRow gvRow, DataTable dt)
{
    DataRow[] dr = dt.Select("CustomerID = '" + gvRow.Cells[1].Text + "'");
    if (dr.Length > 0)
    {
        dt.Rows.Remove(dr[0]);
        dt.AcceptChanges();
    }
    return dt;
}

protected void CheckBox_CheckChanged(object sender, EventArgs e)
{
    //GetData();
    //SetData();
    
}


protected void Button1_Click(object sender, EventArgs e)
{
    Response.Redirect("Retrieve.aspx");
}
}

WEBForm2-----------------------------------------------------

ASP.NET

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="RetrievedGrid.aspx.cs" Inherits="RetrievedGrid" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head  runat="server">
    <title></title>
</head>
<body>
    <form id="form1"  runat="server">
    <div>
      <asp:GridView ID="gvSelected" runat="server" 
AutoGenerateColumns = "false" Font-Names = "Arial" 
Font-Size = "11pt" AlternatingRowStyle-BackColor = "#C2D69B"  
HeaderStyle-BackColor = "green" EmptyDataText = "No Records Selected"  >
<columns>
    <asp:BoundField DataField = "CustomerID" HeaderText = "Customer ID" />
    <asp:BoundField DataField = "ContactName" HeaderText = "Contact Name" />
    <asp:BoundField DataField = "City" HeaderText = "City" />
 </columns>

    </div>
    </form>
</body>
</html>

C# Code --------------------------------For webform2

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class RetrievedGrid : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        BindSecondaryGrid();
    }
    

       private void BindSecondaryGrid()
    {
        DataTable dt = (DataTable)Session["SelectedRecords"];
          gvSelected.DataSource = dt;
         gvSelected.DataBind(); 
    }
    
}

Posted 27-Oct-11 2:04am

DGKumar

Updated 27-Oct-11 2:33am

v3

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Comments

Muralikrishna8811 27-Oct-11 8:27am

where you call getdata() to store your selected data in session

yerrojumeher 27-Oct-11 8:31am

i didnt get you murali. can u explain it clearly so that.we can understand

DGKumar 27-Oct-11 8:34am

i have updated the Question pls check.

Muralikrishna8811 27-Oct-11 9:11am

Try this

protected void Button1_Click(object sender, EventArgs e)
{
GetData();
Response.Redirect("Retrieve.aspx");
}

Muralikrishna8811 27-Oct-11 9:12am

And check first your selected rows are shown in server side or not

1 solution

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firozu · Answer 1 · 2011-10-27T03:21:00

In your GetData() method on Webform 1 you are checking Session object for null and picking up data from ViewState object while populating datatable. See the bold highlighting in the code below--

SQL

if (Session["SelectedRecords"] != null)

        dt = (DataTable)ViewState["SelectedRecords"];
    else
        dt = CreateDataTable();

I doubt the working of your code ???