Sunday, 19 January 2014

Move Selected Gridview Rows to Another Gridview in Asp.net

Here I will explain how to move or transfer selected checkbox gridview rows to another gridview in asp.net using c#, vb.net or copy one gridview row to another gridview in asp.net using c#, vb.net.

Description:

In previous posts I explained Display images in gridview from database in asp.net, Enable/Disable checkbox in gridview based on condition, asp.net gridview examples and bind data to textbox control in gridview, Bind data to dropdownlist  in gridview and many articles relating to asp.net, c#, vb.net, c#, vb.net. Now I will explain how to move selected rows from one gridview to another gridview in asp.net using c#, vb.net.

To implement this first we need to write the code in aspx page like this 


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Tranfer selected gridview rows to another gridview in Asp.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvDetails" AutoGenerateColumns="false" CellPadding="5" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" AutoPostBack="true" OnCheckedChanged="chkSelect_CheckChanged" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="UserId" DataField="UserId" />
<asp:BoundField HeaderText="UserName" DataField="UserName" />
<asp:BoundField HeaderText="Education" DataField="Education" />
<asp:BoundField HeaderText="Location" DataField="Location" />
</Columns>
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
</asp:GridView>
<br />
<b>Second Gridview Data</b>
<asp:GridView ID="gvTranferRows" AutoGenerateColumns="false" CellPadding="5" runat="server" EmptyDataText="No Records Found">
<Columns>
<asp:BoundField HeaderText="UserId" DataField="UserId" />
<asp:BoundField HeaderText="UserName" DataField="UserName" />
<asp:BoundField HeaderText="Education" DataField="Education" />
<asp:BoundField HeaderText="Location" DataField="Location" />
</Columns>
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
</asp:GridView>
</div>
</form>
</body>
</html>
Now add following namespaces in codebehind

C# Code


using System;
using System.Data;
using System.Web.UI.WebControls;
After that add following code in code behind

protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindGridview();
BindSecondGrid();
}
}
protected void BindGridview()
{
DataTable dt = new DataTable();
dt.Columns.Add("UserId", typeof(Int32));
dt.Columns.Add("UserName", typeof(string));
dt.Columns.Add("Education", typeof(string));
dt.Columns.Add("Location", typeof(string));
DataRow dtrow = dt.NewRow();    // Create New Row
dtrow["UserId"] = 1;            //Bind Data to Columns
dtrow["UserName"] = "SureshDasari";
dtrow["Education"] = "B.Tech";
dtrow["Location"] = "Chennai";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow();               // Create New Row
dtrow["UserId"] = 2;               //Bind Data to Columns
dtrow["UserName"] = "MadhavSai";
dtrow["Education"] = "MBA";
dtrow["Location"] = "Nagpur";
dt.Rows.Add(dtrow);
dtrow = dt.NewRow();              // Create New Row
dtrow["UserId"] = 3;              //Bind Data to Columns
dtrow["UserName"] = "MaheshDasari";
dtrow["Education"] = "B.Tech";
dtrow["Location"] = "Nuzividu";
dt.Rows.Add(dtrow);
gvDetails.DataSource = dt;
gvDetails.DataBind();
}
protected void chkSelect_CheckChanged(object sender, EventArgs e)
{
GetSelectedRows();
BindSecondGrid();
}
protected void BindSecondGrid()
{
DataTable dt = (DataTable)ViewState["GetRecords"];
gvTranferRows.DataSource = dt;
gvTranferRows.DataBind();
}
private void GetSelectedRows()
{
DataTable dt;
if (ViewState["GetRecords"] != null)
dt = (DataTable)ViewState["GetRecords"];
else
dt = CreateTable();
for (int i = 0; i < gvDetails.Rows.Count; i++)
{
CheckBox chk = (CheckBox)gvDetails.Rows[i].Cells[0].FindControl("chkSelect");
if (chk.Checked)
{
dt = AddGridRow(gvDetails.Rows[i], dt);
}
else
{
dt = RemoveRow(gvDetails.Rows[i], dt);
}
}
ViewState["GetRecords"] = dt;
}
private DataTable CreateTable()
{
DataTable dt = new DataTable();
dt.Columns.Add("UserId");
dt.Columns.Add("UserName");
dt.Columns.Add("Education");
dt.Columns.Add("Location");
dt.AcceptChanges();
return dt;
}
private DataTable AddGridRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("UserId = '" + gvRow.Cells[1].Text + "'");
if (dr.Length <= 0)
{
dt.Rows.Add();
int rowscount = dt.Rows.Count - 1;
dt.Rows[rowscount]["UserId"] = gvRow.Cells[1].Text;
dt.Rows[rowscount]["UserName"] = gvRow.Cells[2].Text;
dt.Rows[rowscount]["Education"] = gvRow.Cells[3].Text;
dt.Rows[rowscount]["Location"] = gvRow.Cells[4].Text;
dt.AcceptChanges();
}
return dt;
}
private DataTable RemoveRow(GridViewRow gvRow, DataTable dt)
{
DataRow[] dr = dt.Select("UserId = '" + gvRow.Cells[1].Text + "'");
if (dr.Length > 0)
{
dt.Rows.Remove(dr[0]);
dt.AcceptChanges();
}
return dt;
}
VB.NET Code


Imports System.Data
Imports System.Web.UI.WebControls
Partial Class VBCode
Inherits System.Web.UI.Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
If Not IsPostBack Then
BindGridview()
BindSecondGrid()
End If
End Sub
Protected Sub BindGridview()
Dim dt As New DataTable()
dt.Columns.Add("UserId", GetType(Int32))
dt.Columns.Add("UserName", GetType(String))
dt.Columns.Add("Education", GetType(String))
dt.Columns.Add("Location", GetType(String))
Dim dtrow As DataRow = dt.NewRow()
' Create New Row
dtrow("UserId") = 1
'Bind Data to Columns
dtrow("UserName") = "SureshDasari"
dtrow("Education") = "B.Tech"
dtrow("Location") = "Chennai"
dt.Rows.Add(dtrow)
dtrow = dt.NewRow()
' Create New Row
dtrow("UserId") = 2
'Bind Data to Columns
dtrow("UserName") = "MadhavSai"
dtrow("Education") = "MBA"
dtrow("Location") = "Nagpur"
dt.Rows.Add(dtrow)
dtrow = dt.NewRow()
' Create New Row
dtrow("UserId") = 3
'Bind Data to Columns
dtrow("UserName") = "MaheshDasari"
dtrow("Education") = "B.Tech"
dtrow("Location") = "Nuzividu"
dt.Rows.Add(dtrow)
gvDetails.DataSource = dt
gvDetails.DataBind()
End Sub
Protected Sub chkSelect_CheckChanged(ByVal sender As Object, ByVal e As EventArgs)
GetSelectedRows()
BindSecondGrid()
End Sub
Protected Sub BindSecondGrid()
Dim dt As DataTable = DirectCast(ViewState("GetRecords"), DataTable)
gvTranferRows.DataSource = dt
gvTranferRows.DataBind()
End Sub
Private Sub GetSelectedRows()
Dim dt As DataTable
If ViewState("GetRecords") IsNot Nothing Then
dt = DirectCast(ViewState("GetRecords"), DataTable)
Else
dt = CreateTable()
End If
For i As Integer = 0 To gvDetails.Rows.Count - 1
Dim chk As CheckBox = DirectCast(gvDetails.Rows(i).Cells(0).FindControl("chkSelect"), CheckBox)
If chk.Checked Then
dt = AddGridRow(gvDetails.Rows(i), dt)
Else
dt = RemoveRow(gvDetails.Rows(i), dt)
End If
Next
ViewState("GetRecords") = dt
End Sub
Private Function CreateTable() As DataTable
Dim dt As New DataTable()
dt.Columns.Add("UserId")
dt.Columns.Add("UserName")
dt.Columns.Add("Education")
dt.Columns.Add("Location")
dt.AcceptChanges()
Return dt
End Function
Private Function AddGridRow(ByVal gvRow As GridViewRow, ByVal dt As DataTable) As DataTable
Dim dr As DataRow() = dt.[Select]("UserId = '" & gvRow.Cells(1).Text & "'")
If dr.Length <= 0 Then
dt.Rows.Add()
Dim rowscount As Integer = dt.Rows.Count - 1
dt.Rows(rowscount)("UserId") = gvRow.Cells(1).Text
dt.Rows(rowscount)("UserName") = gvRow.Cells(2).Text
dt.Rows(rowscount)("Education") = gvRow.Cells(3).Text
dt.Rows(rowscount)("Location") = gvRow.Cells(4).Text
dt.AcceptChanges()
End If
Return dt
End Function
Private Function RemoveRow(ByVal gvRow As GridViewRow, ByVal dt As DataTable) As DataTable
Dim dr As DataRow() = dt.[Select]("UserId = '" & gvRow.Cells(1).Text & "'")
If dr.Length > 0 Then
dt.Rows.Remove(dr(0))
dt.AcceptChanges()
End If
Return dt
End Function
End Class
Demo


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