ASP. NET Web Forms-Hashtable object, formshashtable

ASP. NET Web Forms-Hashtable object, formshashtable

ASP. NET Web Forms-Hashtable object. The Hashtable object contains the items represented by key/value pairs.

Create Hashtable

The Hashtable object contains the items represented by key/value pairs. The key is used as an index. You can use the search key to quickly search for the value.

Use the Add () method to Add a project to Hashtable.

The following code creates a Hashtable object named mycountries and adds four elements:

Data Binding

The Hashtable object can automatically generate text and values for the following controls:

AutoPostBack = "True" onSelectedIndexChanged = "displayMessage"/>

Asp: RadioButtonList

Asp: CheckBoxList

Asp: DropDownList

Asp: Listbox

To bind data to the RadioButtonList control, you must first create a RadioButtonList control (without any asp: ListItem element) on the. aspx page ):

Then add the script for creating the list and bind the values in the list to the RadioButtonList control:

Then we add a child routine. When you click a project in the RadioButtonList control, the child routine will be executed. When a single-choice button is clicked, a line of text appears in the label:

Instance

Note: you cannot select the sorting method for projects added to Hashtable. To sort projects by letters or numbers, use the SortedList object.