gridview selection by key

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C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Configuration;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml.Linq;
using System.Data;
public partial class Default7 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        int intselectindex = 0;
        int intpageindex = 0;
        int intgridviewpage = GridView1.PageCount;
        //loop threw each page in gridveiw
        for (int i = 0; i < intgridviewpage; i++)
        {
            GridView1.PageIndex = i;
            GridView1.DataBind();
            foreach (GridViewRow gvr in GridView1.Rows)
            {
                if (gvr.Cells[1].Text == DropDownList1.SelectedValue)
                {
                    intselectindex = gvr.RowIndex;
                    intpageindex = i;
                    break;
                }
            }


        }
        GridView1.PageIndex = intpageindex;
        GridView1.SelectedIndex = intselectindex;
        GridView1.DataBind();
    }

}

tin this code when user select any dropdownlist index than it should select related gridview row
error:
in this code when i select one name from dropdownlist than it doesnot select that row of gridview but at that time when i click any select button than it select gridview row(the row in which one coloumn is mention in dropdown)

Posted 8-Apr-13 0:06am

sakshi111

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Comments

sakshi111 8-Apr-13 6:10am

i bind both dropdownlist and gridview with same sqldatasource

Deependra Khangarot 8-Apr-13 6:16am

I think you should add above code with some modification in DropDownList1's SelectedIndexChanged event.

sakshi111 8-Apr-13 6:24am

i already enable select index and page index

sakshi111 8-Apr-13 7:37am

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" %>

<!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="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" BackColor="LightGoldenrodYellow"
BorderColor="Tan" BorderWidth="1px" CellPadding="2"
DataSourceID="SqlDataSource1" GridLines="None" Height="16px"
onselectedindexchanged="GridView1_SelectedIndexChanged" PageSize="5"
style="margin-right: 0px" Width="425px" ForeColor="Black">
<alternatingrowstyle backcolor="PaleGoldenrod">
<columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="student_id" HeaderText="student_id"
SortExpression="student_id" />
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="Age" HeaderText="Age" SortExpression="Age" />
<asp:BoundField DataField="Class" HeaderText="Class" SortExpression="Class" />
<asp:BoundField DataField="dob" HeaderText="dob" SortExpression="dob" />

<footerstyle backcolor="Tan">
<HeaderStyle BackColor="Tan" Font-Bold="True" />
<PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue"
HorizontalAlign="Center" />
<SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
<sortedascendingcellstyle backcolor="#FAFAE7">
<sortedascendingheaderstyle backcolor="#DAC09E">
<sorteddescendingcellstyle backcolor="#E1DB9C">
<sorteddescendingheaderstyle backcolor="#C2A47B">

<asp:DropDownList ID="DropDownList1" runat="server" AppendDataBoundItems="True"
CausesValidation="True" DataSourceID="SqlDataSource1" DataTextField="name"
DataValueField="student_id" AutoPostBack="True">

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:learnConnectionString %>"
SelectCommand="SELECT * FROM [student]">
<br />

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

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Deependra Khangarot · Answer 1 · 2013-04-08T00:34:00

Solution 1

Try below code on DropDownList1_SelectedIndexChanged and set autopostback property of dropdownlist to true.

C#

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
   {
       int intselectindex = 0;
       int intpageindex = 0;
       int intgridviewpage = GridView1.PageCount;
       //loop threw each page in gridveiw
       for (int i = 0; i < intgridviewpage; i++)
       {
           foreach (GridViewRow gvr in GridView1.Rows)
           {
               if (gvr.Cells[1].Text == DropDownList1.SelectedValue)
               {
                   intselectindex = gvr.RowIndex;
                   intpageindex = i;
                   break;
               }
           }


       }
       GridView1.PageIndex = intpageindex;
       GridView1.SelectedIndex = intselectindex;

   }

Posted 8-Apr-13 0:34am

Deependra Khangarot

Comments

sakshi111 8-Apr-13 7:26am

in if condition without GridView1.PageIndex = i; it does not goes to next page and by using your code same condition is happened.

sakshi111 8-Apr-13 7:38am

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" %>

<!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="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" BackColor="LightGoldenrodYellow"
BorderColor="Tan" BorderWidth="1px" CellPadding="2"
DataSourceID="SqlDataSource1" GridLines="None" Height="16px"
onselectedindexchanged="GridView1_SelectedIndexChanged" PageSize="5"
style="margin-right: 0px" Width="425px" ForeColor="Black">
<alternatingrowstyle backcolor="PaleGoldenrod">
<columns>
<asp:CommandField ShowSelectButton="True" />
<asp:BoundField DataField="student_id" HeaderText="student_id"
SortExpression="student_id" />
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="Age" HeaderText="Age" SortExpression="Age" />
<asp:BoundField DataField="Class" HeaderText="Class" SortExpression="Class" />
<asp:BoundField DataField="dob" HeaderText="dob" SortExpression="dob" />

<footerstyle backcolor="Tan">
<HeaderStyle BackColor="Tan" Font-Bold="True" />
<PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue"
HorizontalAlign="Center" />
<SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
<sortedascendingcellstyle backcolor="#FAFAE7">
<sortedascendingheaderstyle backcolor="#DAC09E">
<sorteddescendingcellstyle backcolor="#E1DB9C">
<sorteddescendingheaderstyle backcolor="#C2A47B">

<asp:DropDownList ID="DropDownList1" runat="server" AppendDataBoundItems="True"
CausesValidation="True" DataSourceID="SqlDataSource1" DataTextField="name"
DataValueField="student_id" AutoPostBack="True">

<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:learnConnectionString %>"
SelectCommand="SELECT * FROM [student]">
<br />

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

Anuja Pawar Indore 8-Apr-13 9:43am

Why posting code again and again. Give reference