protected void Button1_Click(object sender, EventArgs e)
{
TextBox1.Text = "You have clicked the button";
TextBox4.Text = "This is a multi line textbox. This is a multi line textbox. This is a multi line textbox. This is a multi line textbox. ";

TextBox3.Text = TextBox2.Text;
}
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
TextBox1.Text = "The Text is changed.";

}


protected void Button1_Click(object sender, EventArgs e)
{
Literal1.Text = "Welcome to ASP.NET 2.0";
}
Source Code:

protected void Button1_Click(object sender, EventArgs e)
{
if( FileUpload1.HasFile)
{

FileUpload1.SaveAs("C:/projects/" + FileUpload1.FileName);
Label2.Text = "File Uploaded";
}
else
Label2.Text = "No uploaded file";

}
protected void btninsert_Click(object sender, EventArgs e)
{
int count =Convert.ToInt32(TextBox1.Text);
Panel1.Controls.Clear();
Table tb = new Table();
tb.GridLines = GridLines.Both;
for (int i = 0; i < count; i++)
{

TableCell c1 = new TableCell();
TableRow rw = new TableRow();
TextBox tx = new TextBox();
c1.Controls.Add(tx);
rw.Cells.Add(c1);
tb.Rows.Add(rw);
}
Panel1.Controls.Add(tb);
}