This article has been
excerpted from book "A Programmer's Guide to ADO.NET in C#".
You can even create a table and add its cells and cell values programmatically.
First, create a table using the <asp:Table> tag and then add rows to it(see
Listing 7-27).
Listing 7-27. Creating a table's rows programmatically
<%@ Page
Language="C#"
AutoEventWireup="true"
CodeBehind="Default.aspx.cs"
Inherits="Creatingtableprogrammatically._Default"
%>
<!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>Untitled
Page</title>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:Table
ID="table1"
runat="server"
Height="114"
Width="439"
BackColor=Aqua>
<asp:TableRow>
</asp:TableRow>
<asp:TableRow>
</asp:TableRow>
<asp:TableRow>
</asp:TableRow>
<asp:TableRow>
</asp:TableRow>
<asp:TableRow>
</asp:TableRow>
</asp:Table>
</div>
</form>
</body>
</html>
Now you add cells and their values at run-time using the TableRow and TableCell
class object (see Listing 7-28).
Listing 7-28. Adding table rows and cells programmatically
int rows = 3;
int cols = 2;
for (int
j = 0; j < rows; j++)
{
TableRow r =
new TableRow();
for (int
i = 0; i < cols; i++)
{
TableCell c =
new TableCell();
c.Controls.Add(new
LiteralControl("row
" + j.ToString() + ", cell " +
i.ToString()));
r.Cells.Add(c);
}
Table1.Rows.Add(r);
}
The example you saw in Listing 7-28 creates a table with three rows and two
columns. You can also add rows and columns to a table programmatically. This
program, which looks like Figure 7-58, adds rows and columns to a table at
run-time based on the values entered in the text boxes. You create a Web
application and add a control, two labels, and two text boxes to the page.
First, you create one <asp:Table> control to your .aspx page:
<%@ Page
Language="C#"
AutoEventWireup="true"
CodeBehind="Default.aspx.cs"
Inherits="Creatingtableprogrammatically._Default"
%>
<!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>Untitled
Page</title>
</head>
<body>
<form
id="form1"
runat="server">
<div>
<asp:Table
ID="Table1"
runat="server">
</asp:Table>
Rows:
<asp:TextBox
ID="TextBox1"
runat="server"></asp:TextBox><br
/>
Columns:
<asp:TextBox
ID="TextBox2"
runat="server"></asp:TextBox>
<asp:Button
ID="Button1"
runat="server"
Text="Create Table"
OnClick="Button1_Click"
/><br
/>
</div>
</form>
</body>
</html>
Figure 7-58. Creating a table programmatically
Next, add the code in Listing7-29 on the button-click handler.
Listing 7-29. Button-click handler create a table programmatically
protected void
Button1_Click(object sender,
EventArgs e)
{
int rows =
Convert.ToInt16(TextBox1.Text);
int cols =
Convert.ToInt16(TextBox2.Text);
for (int
j = 0; j < rows; j++)
{
TableRow r =
new TableRow();
for (int
i = 0; i < cols; i++)
{
TableCell c =
new TableCell();
c.Controls.Add(new
LiteralControl("row"
+ j.ToString() + ", cell " + i.ToString()));
r.Cells.Add(c);
}
Table1.Rows.Add(r);
}
}
Finally, run the application and enter the number of rows and the number of
columns to the text boxes and then click the Create table button to create a
table.
Conclusion
Hope this article would have helped you in understanding
creating
a table programmatically in ASP.NET. See other articles on
the website also for further reference.
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