How Do I Add A Datasource To A Combobox In C#

How to Add together Items in ComboBox in C#?

In Windows forms, ComboBox provides 2 different features in a single control, it means ComboBox works equally 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-downwards card. You are allowed to a list or drove of elements in your ComboBox by using Items Belongings. You can set this holding using two different methods:

1. Design-Time: Information technology is the easiest method to add together the items in the ComboBox command using the post-obit steps:

2. Run-Time: It is a piddling bit trickier than the above method. In this method, you tin add the list of elements in the ComboBox programmatically with the assistance of given syntax:

public System.Windows.Forms.ComboBox.ObjectCollection Items { get; }

Here, the ComboBox.ObjectCollection indicates the elements present in the ComboBox. Post-obit steps are used to add the elements in 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 two: Afterwards creating ComboBox, add the elements in the ComboBox.

// Adding elements in the combobox mybox.Items.Add together(230); mybox.Items.Add together(231); mybox.Items.Add(232); mybox.Items.Add(233); mybox.Items.Add(234);;

Stride 3: And last add this combobox control to form using Add together() method.
```
// Add together this ComboBox to class this.Controls.Add(mybox);              
```
Example:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using Arrangement.Linq;

using Arrangement.Text;

using Organization.Threading.Tasks;

using System.Windows.Forms;

namespace WindowsFormsApp11 {

public fractional class Form1 : Form {

public Form1()

{

InitializeComponent();

}

private void Form1_Load( object sender, EventArgs eastward)

{

Label fifty = new Characterization();

l.Location = new Point(222, fourscore);

fifty.Size = new Size(99, xviii);

l.Text = "Select Your id" ;

this .Controls.Add(fifty);

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);

this .Controls.Add together(mybox);

}

}

}

Output: