How to Add a Control to a Form Programmatically?
I'm Trying to Add a Control(Label) Inside of a Panel. Please See the Code: Using System; Using System. Collections. Generic; Using System. Componentmodel...
I'm trying to add a control(Label) inside of a panel. Please see the code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace AddControlProgramatically
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Label lbl = new Label();
for (int x = 0; x <= 3; x++)
{
//create new label location after each loop
//by multiplying the new value of variable x by 5, so the new label
//control will not overlap each other.
lbl.Location = new System.Drawing.Point(52 + (x * 5), 58 + (x * 5));
//create new id and text of the label
lbl.Name = "label_" + x.ToString();
lbl.Text = "Label " + x.ToString();
this.panel1.Controls.Add(lbl);
}
}
}
}
Here's the form. What I'm trying to accomplish is to programatically generate 3 diffent control labels. But as you can see, It only displays the last one. Please help me regarding this. I know there's something wrong in my code (cause it's not working).Thanks...
4 Answers
Put the Label lbl = new Label(); inside the loop.
And make the offset bigger, change this...
lbl.Location = new System.Drawing.Point(52 + (x * 5), 58 + (x * 5))
...to:
lbl.Location = new System.Drawing.Point(52 + (x * 30), 58 + (x * 30))
You need to create a new label in each loop iteration. Right now you are only creating one label.
private void button1_Click(object sender, EventArgs e)
{
for (int x = 0; x <= 3; x++)
{
Label lbl = new Label();
//create new label location after each loop
//by multiplying the new value of variable x by 5, so the new label
//control will not overlap each other.
lbl.Location = new System.Drawing.Point(52 + (x * 5), 58 + (x * 5));
//create new id and text of the label
lbl.Name = "label_" + x.ToString();
lbl.Text = "Label " + x.ToString();
this.panel1.Controls.Add(lbl);
}
}
You need to put Label lbl = new Label(); inside your for loop.
Very old question, but apparently nobody took the time to get it right.... You keep overwriting the same Label object instance. Instead create a list of Label instances and then add them to your form like this:
List < Label > myLabels = new List<Label>();
for (int i = 0; i < 5; i++)
{
Label lbl = new Label();
//create new id and text of the label
lbl.Name = "label_" + i.ToString();
lbl.Text = "Label " + i.ToString();
lbl.Width = 50;
lbl.Location = new System.Drawing.Point(52 + (i * lbl.Width), 50);
myLabels.Add(lbl);
}
foreach (Label l in myLabels)
{
this.Controls.Add(l);
}
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