How to set Name of the ComboBox in C#?
In Windows forms, ComboBox provides two different features in a single control, it means ComboBox works as both TextBox and ListBox. In ComboBox, only one item is displayed at a time and the rest of the items are present in the drop-down menu. You are allowed to provide a name to your ComboBox by using Name Property. You can set this property using two different methods:
1. Design-Time: It is the easiest method to set the name of the ComboBox control by using 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 ComboBox control from the ToolBox and drop it on the windows form. You are allowed to place a ComboBox control anywhere on the windows form according to your need.
- Step 3: After drag and drop you will go to the properties of the ComboBox control to set the name of the ComboBox.
Output:
2. Run-Time: It is a little bit trickier than the above method. In this method, you can set the name of the ComboBox programmatically with the help of given syntax:
public string Name { get; set; }
Here, the string represents the ComboBox name. Following steps are used to set the name of the ComboBox:
- Step 1: Create a combobox using the ComboBox() constructor is provided by the ComboBox class.
// Creating ComboBox using ComboBox class ComboBox mybox = new ComboBox();
- Step 2: After creating ComboBox, set the name of the ComboBox.
// Set the name of the combobox mybox.Name = "My_Cobo_Box";
- Step 3: And last add this combobox control to form using Add() method.
// Add this ComboBox to form this.Controls.Add(mybox);
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
WindowsFormsApp11 {
public
partial
class
Form1 : Form {
public
Form1()
{
InitializeComponent();
}
private
void
Form1_Load(
object
sender, EventArgs e)
{
// Creating and setting the properties of label
Label l =
new
Label();
l.Location =
new
Point(222, 80);
l.Size =
new
Size(99, 18);
l.Text =
"Select Your id"
;
// Adding this label to the form
this
.Controls.Add(l);
// Creating and setting the properties of comboBox
ComboBox mybox =
new
ComboBox();
mybox.Location =
new
Point(327, 77);
mybox.Size =
new
Size(216, 26);
mybox.Name =
"My_Cobo_Box"
;
mybox.Items.Add(230);
mybox.Items.Add(231);
mybox.Items.Add(232);
mybox.Items.Add(233);
mybox.Items.Add(234);
// Adding this ComboBox to the form
this
.Controls.Add(mybox);
}
}
}
Output:
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