Create a DataView
HowToCreateADataView.aspx
<%@ Page Language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
DataTable dt = new DataTable();
dt.TableName = "Books";
DataColumn dc1 = new DataColumn();
dc1.ColumnName = "BookID";
dc1.DataType = typeof(int);
dc1.AllowDBNull = false;
dc1.Unique = false;
DataColumn dc2 = new DataColumn();
dc2.ColumnName = "BookName";
dc2.DataType = typeof(string);
DataColumn dc3 = new DataColumn();
dc3.ColumnName = "Author";
dc3.DataType = typeof(string);
dt.Columns.AddRange(new DataColumn[] { dc1, dc2, dc3 });
dt.Rows.Add(new object[] { 1, "MySQL for Python", "Albert Lukaszewski, PhD" });
dt.Rows.Add(new object[] { 2, "Python 2.6 Graphics Cookbook", "Mike Ohlson de Fine " });
dt.Rows.Add(new object[] { 3, "Flash Game Development by Example", "Emanuele Feronato" });
dt.AcceptChanges();
GridView1.DataSource = dt.DefaultView;
GridView1.DataBind();
//this line create a new DataView
DataView dView = new DataView(dt);
dView.Sort = "BookName DESC";
Label1.Text = "Here we create a new DataView<br />" +
"and sorted it DESC by 'BookName' column";
GridView2.DataSource = dView;
GridView2.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>How to create a DataView in ado.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:DarkBlue; font-style:italic;">
How to create a DataView in ado.net
</h2>
<hr width="450" align="left" color="CornFlowerBlue" />
<asp:GridView
ID="GridView1"
runat="server"
BorderColor="Snow"
ForeColor="Snow"
Width="525"
>
<HeaderStyle BackColor="PaleVioletRed" />
<RowStyle BackColor="SeaGreen" />
<AlternatingRowStyle BackColor="DarkGreen" />
</asp:GridView>
<br />
<asp:Label
ID="Label1"
runat="server"
Font-Size="Large"
ForeColor="DodgerBlue"
Font-Italic="true"
>
</asp:Label>
<br /><br />
<asp:GridView
ID="GridView2"
runat="server"
BorderColor="Snow"
ForeColor="Snow"
Width="525"
ShowHeaderWhenEmpty="true"
>
<HeaderStyle BackColor="PaleVioletRed" />
<RowStyle BackColor="SeaGreen" />
<AlternatingRowStyle BackColor="DarkGreen" />
</asp:GridView>
<br />
<asp:Button
ID="Button1"
runat="server"
OnClick="Button1_Click"
Text="Populate GridView"
Height="45"
Font-Bold="true"
ForeColor="DodgerBlue"
/>
</div>
</form>
</body>
</html>
- How to create a primary key for a DataTable
- How to create multi-column primary key for a DataTable
- How to copy one DataTable to another DataTable
- How to use DataTable Compute method
- How to merge two DataTables
- How to count rows in a DataView
- How to filter data in a DataView
- How to create a DataTable with distinct rows from a DataView
- How to add a new row to the DataView
- How to create a DataTable from a DataView
