CODEWITHSUNDEEP
c#asp.netdynamically-generated
NASRIN
NASRIN

Reputation: 499

To generates dynamically textboxes in asp.net

I want to generate dynamically textbox in asp.net and c#. This code works only once, but I want any time click the button, two textboxes added.

private void CreateTextBox(string ID)
{
    TextBox txt = new TextBox();
    txt.ID = ID;
    txt.Width = Unit.Pixel(150);
    txt.AutoPostBack = false;
    TextBox txt2 = new TextBox();
    txt2.ID = ID + "s";
    txt2.Width = Unit.Pixel(100);
    txt2.AutoPostBack = false;
    Panel1.Controls.Add(txt);
    Panel1.Controls.Add(new LiteralControl("&nbsp&nbsp"));
    Panel1.Controls.Add(txt2);
    Panel1.Controls.Add(new LiteralControl("<br>"));

}


  protected void Button2_Click(object sender, EventArgs e)
{

        CreateTextBox("txtTag-" + index.ToString());
        index ++;
}

index is global static int variable.

What is the problem?

Upvotes: 0

Views: 446

Answers (4)

mina __________
mina __________

Reputation: 46

you can use ControlRenderer instead of this, such as this:

    protected void btn_Click(object sender, EventArgs e)
{
    TextBox textName;
    textName = new TextBox();
    textName.TextChanged += new EventHandler(textName_TextChanged);

    string divContect = ControlRenderer(divTextBox);
    divTextBox.InnerHtml = divContect + ControlRenderer(textName);
}

protected void textName_TextChanged(object sender, EventArgs e)
{

}

public string ControlRenderer(Control control)
{
    StringWriter writer = new StringWriter();
    control.RenderControl(new HtmlTextWriter(writer));
    return writer.ToString();
}

Upvotes: 1

wy__
wy__

Reputation: 301

You can add controls pragmatically only during the page's initialization stage, see ASP.NET Page Life Cycle Overview

Upvotes: 0

Kamran Ajmal
Kamran Ajmal

Reputation: 302

Use this code 

int index = 1;
while(index <=2)
{
   CreateTextBox("txtTag-" + index.ToString());
   index++;
}

Upvotes: 0

Vishweshwar Kapse
Vishweshwar Kapse

Reputation: 939

U need to learn the Page Life Cycle of asp.net. Http is a stateless protocol The server does not remember anything about the previous requests

Y don't u Learn about using Session and then keep track of the index in the Session variable

Upvotes: 1

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