About this code
This code is based on the HTML part that we discussed in last article. You can modify the events & Control names according to you.
This the Page load event. In the Page_Load method, we rebuilds all the product fields ever time the page is loaded. I have explained the reason of this in my previous article.
private void Page_Load(object sender, System.EventArgs e)
{
int counter;
if(!IsPostBack)
ViewState["ProductCount"] = 0;
else if(Convert.ToInt32(ViewState["ProductCount"]) > 1)
{
for(counter=1;counter <= Convert.ToInt32(ViewState["ProductCount"]);counter++)
AddProduct(counter);
}
}
This is the method that we have used to add the controls.
private void AddProduct(int intFieldNum)
{
LiteralControl litLabel = new LiteralControl();
litLabel.Text = "Product " + intFieldNum.ToString() ;
PlaceHolder1.Controls.Add(litLabel);
TextBox txtField = new TextBox();
txtField.ID = "txtProduct" + intFieldNum.ToString();
PlaceHolder1.Controls.Add(txtField);
}
private void btnAdd_Click(object sender, System.EventArgs e)
{
int intCounter = Int32.Parse(TextBox1.Text);
for(int i = 1;i <= intCounter;i++ )
{
ViewState["ProductCount"] = Convert.ToInt32(ViewState["ProductCount"]) + 1;
AddProduct(Convert.ToInt32(ViewState["ProductCount"]));
}
}
private void btnShow_Click(object sender, System.EventArgs e)
{
foreach(Control ctrlControl in PlaceHolder1.Controls)
{
if(ctrlControl is TextBox)
{
TextBox txt = (TextBox)ctrlControl;
lblMessage.Text = lblMessage.Text + txt.Text + "<br>";
}
}
}
I hope now you have a good idea of this process.
For any query, mail me at:
rathi.del@gmail.com
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