Как установить размер ListBox в C #?
В Windows Forms элемент управления ListBox используется для отображения нескольких элементов в списке, из которого пользователь может выбрать один или несколько элементов, и элементы обычно отображаются в нескольких столбцах. В ListBox вам разрешено устанавливать высоту и ширину ListBox в пикселях, используя свойство Size ListBox, что делает ваш ListBox более привлекательным. Вы можете установить это свойство двумя разными способами:
1. Design-Time: It is the easiest way to set the size of the ListBox as shown in the following steps:
- Step 1: Create a windows form as shown in the below image:
Visual Studio -> File -> New -> Project -> WindowsFormApp - Step 2: Drag the ListBox control from the ToolBox and drop it on the windows form. You are allowed to place a ListBox control anywhere on the windows form according to your need.
- Step 3: After drag and drop you will go to the properties of the ListBox control to set the size of the ListBox.
Output:
2. RunTime: It is a little bit trickier than the above method. In this method, you can set the size of the ListBox control programmatically with the help of given syntax:
public System.Drawing.Size Size { get; set; }
Here, Size indicates the height and width of the ListBox in pixels. The following steps show how to set the size of the ListBox dynamically:
- Step 1: Create a list box using the ListBox() constructor is provided by the ListBox class.
// Creating ListBox using ListBox class constructor ListBox mylist = new ListBox();
- Step 2: After creating ListBox, set the Size property of the ListBox provided by the ListBox class.
// Setting the size of the ListBox mylist.Size = new Size(120, 95);
- Step 3: And last add this ListBox control to the form using Add() method.
// Add this ListBox to the form this.Controls.Add(mylist);
Example:
using
System;
using
System.Collections.Generic;
using
System.ComponentModel;
using
System.Data;
using
System.Drawing;
using
System.Linq;
using
System.Text;
using
System.Threading.Tasks;
using
System.Windows.Forms;
namespace
WindowsFormsApp25 {
public
partial
class
Form1 : Form {
public
Form1()
{
InitializeComponent();
}
private
void
Form1_Load(
object
sender, EventArgs e)
{
// Creating and setting
// the properties of ListBox
ListBox mylist =
new
ListBox();
mylist.Location =
new
Point(287, 109);
mylist.Size =
new
Size(120, 95);
mylist.ForeColor = Color.Purple;
mylist.Items.Add(123);
mylist.Items.Add(456);
mylist.Items.Add(789);
// Adding ListBox control to the form
this
.Controls.Add(mylist);
}
}
}
Output: