How To Bind Combobox with Database in C#? This article learn about Bind Combobox in C# From List .C# controls are located in the Toolbox of the development environment, and you use them to create objects on a form with a simple series of mouse clicks and dragging motions. A ComboBox displays a text box combined with a ListBox, which enables the user to select items from the list or enter a new value .

The DropDownStyle property specifies whether the list is always displayed or whether the list is displayed in a drop-down. The DropDownStyle property also specifies whether the text portion can be edited. See ComboBoxStyle for the available settings and their effects. There is no setting to always display the list and disallow entering a new value. To display a list to which no new values can be added, use a ListBox control.

To add or remove objects inw the list at run time, use methods of the ComboBox.ObjectCollection class (through the Items property of the ComboBox). You can assign an array of object references with the AddRange method. The list then displays the default string value for each object. You can add individual objects with the Add method. You can delete items with the Remove method or clear the entire list with the Clear method.

In addition to display and selection functionality, the ComboBox also provides features that enable you to efficiently add items to the ComboBox and to find text within the items of the list. With the BeginUpdate and EndUpdate methods, you can add a large number of items to the ComboBox without the control being repainted each time an item is added to the list. The FindString and FindStringExact methods enable you to search for an item in the list that contains a specific search string.

You can use these properties to manage the currently selected item in the list, the Text property to specify the string displayed in the editing field, the SelectedIndex property to get or set the current item, and the SelectedItem property to get or set a reference to the object.

Let’s to practice example combobox with datasource C# :

1. Create database in mysql with name “test” and create table with name “user” ,we will use data from field “title” to load in combobox list like the below.

csharp-bind-combobox-chsarp
2. Create a new application project. In Visual Studio, on the menu click File> New > Project. For more details, see the following menu on the display.

new-project

3. Then will appear the window New Project like the look below.

project-name

4. Write down the name of the project that will be created on a field Name. Specify the directory storage project by accessing the field Location. Next, give the name of the solution in the Solution Name. Then click OK.

console-program
5. Create a new windows form like the below.
csharp-bind-combobox-form
6. Create a new class for connection database and write the following program listing :

7. Next step, Back to windows form and view code to write the following program listing:

8. . After you write down the program listings, press the F5 key to run the program and if you successfull connect your database the result is :

csharp-bind-combobox-csharp

We have explained how to bind combobox C#, for those of you who want to download the source code of the program also can.. Hopefully this discussion is helpful to you.

You can see Bind Combobox In C# From List from Github project in Here.

Thank you for reading this article about Bind Combobox In C# From List, I hope this article is useful for you. Visit My Github about .Net Csharp in Here

 

Bind Combobox In C# From List
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