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02.20.2008 at 12:56PM PST, ID: 23179146
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8.8

Adding a Template Column on a Datatable bound GridView

Zones: Programming for ASP.NET, .NET, Visual Studio .NET 2005
Tags: VB.NET, ASP.NET
Hello experts,

I have a gridview that is bound to a Datatable.  The Autogenerate columns is set to "True".  on the gridview, I want to add an extra column that contains an "Edit Record" button.  When the button is clicked, I want it to call the "Popup_Edit_Window" javascript function and pass the value in the "Table_Name" column as a parameter.

How can I do this?

Thanks,
Paolo
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<!-- Imported .NET Namespaces -->
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SQLClient" %>
 
<!-- User Controls -->
<%@ Register TagPrefix="Common" TagName="Header" Src="Header.ascx" %>
 
<%@ Page Language="VB" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<script runat="server">
    'Global variables
    Dim conn As SqlConnection
    Dim daMaster As SqlDataAdapter
    Dim dsMaster As DataSet = New DataSet()
    Dim strWHERE as String
    
    Sub Page_Load()
        conn = New SqlConnection(ConfigurationManager.ConnectionStrings("MyDB").ConnectionString)
        If Not Page.IsPostBack Then
            Call Populate_Lookups()
            Call Load_Master_Grid()
        End If
        
    End Sub
    
    Sub Load_Master_Grid()
        Dim strSQL As String
        
        strSQL = ""
        strSQL = strSQL & "SELECT * from information_schema.tables "
   
        'where clause
        Call Set_Filter()
        strSQL = strSQL & strWHERE
        
        If hdn_gridMaster_Sort_Column.Value > "" Then
            strSQL = strSQL & " ORDER BY " & hdn_gridMaster_Sort_Column.Value & " " & hdn_gridMaster_Sort_Order.Value
        Else 'default sort order   
            strSQL = strSQL & " ORDER BY table_name"
        End If
        
        'Response.Write(strSQL)
        
        'save sql to be use to export data to excel
        'Session("ExportSQL") = "SELECT dsg_billing_system_name as 'BS',dsg_division_name as 'Division',dsg_site_name as 'Site',dsg_site_description as 'Site Name',campaign_code as 'Campaign Code',marketing_name as 'Desc',dt_marketing_start_sell_date as 'Start Date',dt_marketing_end_sell_date as 'End Date',case corporate when 1 then 'Yes' else 'No' end as 'Corporate' FROM list_campaign " & strWHERE & " order by dsg_division_name,dsg_site_description,campaign_code "
 
        'Response.Write(strSQL)
        'create the temporary Datatable
        daMaster = New SqlDataAdapter(strSQL, conn)
        daMaster.Fill(dsMaster, "dtMaster")
      
        gridMaster.DataSource = dsMaster.Tables("dtMaster")
        gridMaster.DataBind()
      
        
        'delete the datatable
        If dsMaster.Tables.CanRemove(dsMaster.Tables("dtMaster")) Then
            dsMaster.Tables.Remove("dtMaster")
        End If
    End Sub
   
   Sub Populate_Lookups()
        Dim strSQL As String
        
        ''***************************************
        ''* Populate Lookup 1
        ''***************************************
        
        strSQL = "select distinct table_type from INFORMATION_SCHEMA.tables ORDER BY table_type"
        
        'create the temporary Datatable
        daMaster = New SqlDataAdapter(strSQL, conn)
        daMaster.Fill(dsMaster, "dtLookup1")
        
        filter_table_type.DataSource = dsMaster.Tables("dtLookup1")
        filter_table_type.DataValueField = "table_type"
        filter_table_type.DataTextField = "table_type"
        filter_table_type.Items.Clear()
        filter_table_type.Items.Add(New ListItem("", ""))
        filter_table_type.DataBind()
        
        'delete the datatable
        If dsMaster.Tables.CanRemove(dsMaster.Tables("dtLookup1")) Then
            dsMaster.Tables.Remove("dtLookup1")
        End If
  
    End Sub
 
    Sub Set_Filter()
       
        If RTrim(filter_table_type.SelectedValue) > "" Then
            strWHERE = strWHERE & " table_type = '" & filter_table_type.SelectedValue & "' AND"
        End If
 
        If RTrim(filter_table_name.Text) > "" Then
            strWHERE = strWHERE & " table_name like '%" & filter_table_name.Text & "%' AND"
        End If
        
        If strWHERE > "" Then
            strWHERE = " where " & Mid(strWHERE, 1, Len(strWHERE) - 4)
        End If
        
    End Sub
    
    Sub gridMaster_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs) Handles gridMaster.PageIndexChanging
        gridMaster.PageIndex = e.NewPageIndex
        Call Load_Master_Grid()
    End Sub
  
    Sub gridMaster_Sorting(ByVal sender As Object, ByVal e As GridViewSortEventArgs) Handles gridMaster.Sorting
  
        'default to ascending if new column is clicked   
  
        If hdn_gridMaster_Sort_Column.Value <> e.SortExpression Then
            hdn_gridMaster_Sort_Order.Value = "ASC"
        End If
  
        'toggle sort order if the same column is clicked   
  
        If hdn_gridMaster_Sort_Column.Value = e.SortExpression Then
            If hdn_gridMaster_Sort_Order.Value = "ASC" Then
                hdn_gridMaster_Sort_Order.Value = "DESC"
            Else
                hdn_gridMaster_Sort_Order.Value = "ASC"
            End If
        End If
  
        hdn_gridMaster_Sort_Column.Value = e.SortExpression
  
        gridMaster.PageIndex = 0
        Call Load_Master_Grid()
  
    End Sub
 
    Sub btnApplyFilter_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        Call Load_Master_Grid()
    End Sub
    
   
</script>
 
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Human Resources</title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
    <script language="JavaScript"  type="text/javascript" src="javascripts/CommonClientSideFunctions.js"></script>
<script language="JavaScript"  type="text/javascript">
 function Popup_Edit_Window(in_PK)
 {
    var url ="Detail_Page.aspx?PK=" + in_PK; 
    var height = 500;
    var width = 800;
    var top=100;
    var left=50;
  
    var features='height='+ height +',width='+ width +',top='+ top +',left='+ left+",scrollbars=yes,status=yes";
    popupWindow1=window.open(url,'detailwindow',features);
    popupWindow1.focus();
 }
 </script>
 
</head>
<body>
    <form id="form1" runat="server">
    <asp:HiddenField ID="hdn_gridMaster_Sort_Order" runat="server" />
    <asp:HiddenField ID="hdn_gridMaster_Sort_Column" runat="server" />
 
     <!-- Filter Box -->
    <br/>
    <table align="center">
    <tr>
    <td>Table Type</td>
    <td><asp:DropDownList ID="filter_table_type"  AppendDataBoundItems="True" Width="200" runat="server">
        </asp:DropDownList>
   </td>
    <td>Table Name</td>
    <td> <asp:TextBox ID="filter_table_name" runat="server"></asp:TextBox>
    </td>
    <td><asp:Button ID="btnApplyFilter" runat="server" Text="Apply Filter" OnClick="btnApplyFilter_Click" />
    </td>
    
    </tr>
    </table>
        
    <br/>
   
    <!-- Master Grid -->
    <table align="center">
    <tr>
    <td>
    <div align="left">
    <asp:GridView ID="gridMaster" CssClass="gridMaster"  Width="900" runat="server" AllowSorting="true" AllowPaging="true"  EmptyDataText="There are no data records to display."  >
    <PagerSettings Mode="NextPreviousFirstLast" FirstPageText="First" LastPageText="Last" NextPageText="Next" PreviousPageText="Previous" />
    </asp:GridView>
    </div>
    </td>
    </tr>
    </table>
    </form>
</body>
</html>
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Question Stats
Zone: Programming
Question Asked By: crickpaolo
Solution Provided By: CmdoProg2
Participating Experts: 1
Solution Grade: A
Views: 244
Translate:
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02.20.2008 at 02:49PM PST, ID: 20942885

Rank: Master

CmdoProg2:

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02.21.2008 at 09:10AM PST, ID: 20949676
crickpaolo:

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