Member Avatar for senthilcse

please help me in doing this

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  • Latest Post Latest Post by baig123

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Generated

You can create any number of server Labels at runtime, but the key is when and where you add them. Add them to a container (PlaceHolder or Panel) and recreate them on every request, in Page_Init or earlier, so ViewState/events are wired up. is right about using a PlaceHolder; the specific while condition shown (0 == (x - 1)) will not run when x starts at 5, which is why nothing appears. ’s loop works conceptually; adding to a dedicated container instead of form1 gives you precise placement.

Example pattern (code-behind):

protected void Page_Init(object sender, EventArgs e)
{
    // Example: get n from config, DB, or validated user input.
    int n = Math.Max(0, Math.Min(GetDesiredCount(), 200)); // cap to avoid overload

    foreach (int i in Enumerable.Range(1, n))
    {
        var lbl = new Label { ID = "lbl" + i, Text = "Label " + i };
        phLabels.Controls.Add(lbl);
        phLabels.Controls.Add(new LiteralControl("<br />")); // spacing
    }
}

Practical tips:

  • Do not wrap the creation in if (!IsPostBack). Dynamic controls must be recreated on each request, otherwise they disappear on postback and lose state.
  • Use unique IDs (lbl1, lbl2, ...) so you can find them later with phLabels.FindControl("lbl3").
  • Labels render inline; add breaks (as above) or apply a CSS class with display:block;.
  • If n comes from user input, validate and cap it to prevent creating thousands of controls unintentionally.
  • If you only need to output text and do not reference the controls on the server, consider Literal or plain HTML to reduce server-control overhead. For large lists, a Repeater/ListView is often cleaner than hand-adding many Labels.

Recommended Answers

All 6 Replies

Member Avatar for senthilcse

that is i want to create n number of labels using C# coding

Member Avatar for TimCadieux

I wrote this without being able to test it, but it should at least get you started.
Insert a placeholder into the HTML where you want the Labels to appear, then use this code.

{
    int x = 5;

    while (0 == (x - 1)) {
        Label myLabel = new Label();

        myLabel.ID = "myLabel_" + x;
        myLabel.Text = "Label No. " + x;

        PlaceHolder1.Controls.Add(myLabel);
        x += x;
    }
}
Member Avatar for geniusvishal 
for(int i=0;i<n;i++)
{
Label NewLabel = new Label();
NewLabel.ID ="Label"+i;
NewLabel.Text = "Label" + i;
this.form1.Controls.Add(NewLabel);
}
Edited by geniusvishal
Member Avatar for asisaf

thanks geniusvishal & TimCadieux :):)

Member Avatar for baig123 
static int SumWhile()
{
    //
    // Sum numbers 0 .. 4
    //
    int sum = 0;
    int i = 0;
    while (i < 5)
    {
    sum += i;
    i++;
    }
    return sum;
}
Member Avatar for baig123 
using System;

class Program
{
    static void Main()
    {
    //
    // Shows five 'for int i' loops.
    //
    Console.WriteLine("--- For 1 ---");
    for (int i = 0; i < 10; i++)
    {
        Console.WriteLine(i);
    }
    Console.WriteLine("--- For 2 ---");
    for (int i = 10 - 1; i >= 0; i--)
    {
        Console.WriteLine(i);
    }
    Console.WriteLine("--- For 3 ---");
    for (int i = 0; i < 10; i += 2)
    {
        Console.WriteLine(i);
    }
    Console.WriteLine("--- For 4 ---");
    for (int i = 10 - 1; i >= 0; i -= 2)
    {
        Console.WriteLine(i);
    }
    Console.WriteLine("--- For 5 ---");
    for (int i = 0; i < (20 / 2); i += 2)
    {
        Console.WriteLine(i);
    }
    }
}
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