Change a DataColumn's Ordinal in DataTable
DataColumnSetOrdinal.aspx
<%@ Page Language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Data" %>
<!DOCTYPE html>
<script runat="server">
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;
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, "Learning Flash CS4 Professional", "Rich Shupe" });
dt.Rows.Add(new object[] { 2, "Search Engine Optimization for Flash", "Todd Perkins" });
dt.Rows.Add(new object[] { 3, "Dreamweaver CS4: The Missing Manual", "David Sawyer McFarland" });
GridView1.DataSource = dt;
GridView1.DataBind();
Label1.Text = "<b><u>Columns with Ordinal....</u></b><br />";
for (int i=0; i< dt.Columns.Count; i++)
{
Label1.Text += dt.Columns[i].ColumnName + " || ";
Label1.Text += dt.Columns[i].Ordinal + "<br/ >";
}
dt.Columns[1].SetOrdinal(2);
Label1.Text += "after Ordinal change......";
GridView2.DataSource = dt;
GridView2.DataBind();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Using SetOrdinal() method - How to set change DataColumn Ordinal in DataTable in ado.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:DarkBlue; font-style:italic;">
Using SetOrdinal() method - How to set
<br /> change DataColumn Ordinal in DataTable in ado.net
</h2>
<hr width="525" align="left" color="CornFlowerBlue" />
<asp:GridView
ID="GridView1"
runat="server"
BorderColor="Snow"
ForeColor="Snow"
Width="550"
>
<HeaderStyle BackColor="DarkBlue" Height="35" />
<RowStyle BackColor="DodgerBlue" />
<AlternatingRowStyle BackColor="SkyBlue" />
</asp:GridView>
<asp:Label
ID="Label1"
runat="server"
Font-Size="Medium"
ForeColor="HotPink"
>
</asp:Label>
<asp:GridView
ID="GridView2"
runat="server"
BorderColor="Snow"
ForeColor="Snow"
Width="550"
>
<HeaderStyle BackColor="DarkBlue" Height="35" />
<RowStyle BackColor="DodgerBlue" />
<AlternatingRowStyle BackColor="SkyBlue" />
</asp:GridView>
<asp:Button
ID="Button1"
runat="server"
OnClick="Button1_Click"
Text="Populate GridView"
Height="45"
Font-Bold="true"
ForeColor="DarkBlue"
/>
</div>
</form>
</body>
</html>
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