Question

I am trying to find multiple labels using a for loop, but I’m only finding the last label. Here is my code:

string input = textBox1.Text;
int n = Convert.ToInt32(input);
for (i = 1; i <= n; i++)
{
    label.Name = "label" + i;
    label.Location = new Point(100, 100 + i * 30);
    label.TabIndex = i;
    label.Visible = true;
    //label[i].Name=
    label.Text = "jjgggg";


    this.Controls.Add(label);
}

I want all labels between 1 to 5 if I input 5.

Answer 1

You’re repeatedly assigning to the properties of the same label. You need something like:

string input = textBox1.Text;
int n = Convert.ToInt32(input);
for (i = 1; i <= n; i++)
{
    Label label = new Label();
    label.Name = "label" + i;
    label.Location = new Point(100, 100 + i * 30);
    label.TabIndex = i;
    label.Visible = true;
    label.Text = "jjgggg";

    this.Controls.Add(label);
}

You might also want to consider using an object initializer:

string input = textBox1.Text;
int n = Convert.ToInt32(input);
for (i = 1; i <= n; i++)
{
    Label label = new Label
    {
        Name = "label" + i,
        Location = new Point(100, 100 + i * 30),
        TabIndex = i,
        Visible = true,
        Text = "jjgggg"
    };

    this.Controls.Add(label);
}