ChangingEventHandler Delegate

Represents a method that will handle the RepositoryItem.EditValueChanging event.

Namespace: DevExpress.XtraEditors.Controls

Assembly: DevExpress.XtraEditors.v18.1.dll

Declaration

C#

public delegate void ChangingEventHandler(
    object sender,
    ChangingEventArgs e
);

VB.NET

Public Delegate Sub ChangingEventHandler(
    sender As Object,
    e As ChangingEventArgs
)

Parameters

Name	Type	Description
sender	Object	The event sender (typically the BaseEdit descendant).
e	ChangingEventArgs	A ChangingEventArgs object containing data related to the event.

Remarks

When creating a ChangingEventHandler delegate, you identify the method that will handle the corresponding event. To associate an event with your event handler, add a delegate instance to this event. The event handler is called whenever the event occurs unless you remove the delegate. For more information on event handler delegates, see Events and Delegates in MSDN.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ChangingEventHandler delegate.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-create-a-custom-font-edit-control-that-supports-a-skinned-font-dialog-e3683/CS/CustomControlBinder.cs#L20

ListOfInitialControls.Add(InitialControl);
DependControl.Properties.EditValueChanging += new DevExpress.XtraEditors.Controls.ChangingEventHandler(TextEdit_EditValueChanging);
if (ChangeDependControlValueOnLeaveFocus) DependControl.Properties.Leave += new EventHandler(TextEdit_Leave);

how-to-create-a-text-editor-to-show-auto-completion-suggestions-in-the-popup-e3055/CS/TextEditPopUp/RepositoryItemTextEditPopUp.cs#L63

this.TextEditStyle = DevExpress.XtraEditors.Controls.TextEditStyles.Standard;
this.EditValueChanging += new DevExpress.XtraEditors.Controls.ChangingEventHandler(RepositoryItemTextEditPopUp_EditValueChanging);
this.KeyDown += new KeyEventHandler(RepositoryItemTextEditPopUp_KeyDown);

how-to-validate-the-image-inserted-into-the-picture-editor-e820/CS/Form1.cs#L73

this.pictureEdit1.TabIndex = 0;
this.pictureEdit1.EditValueChanging += new DevExpress.XtraEditors.Controls.ChangingEventHandler(this.pictureEdit1_EditValueChanging);
//

imagecomboboxedit-how-to-disable-specific-items-selection-e2358/CS/WindowsApplication33/Form1.cs#L33

imageComboBoxEdit1.Properties.DrawItem += new DevExpress.XtraEditors.ListBoxDrawItemEventHandler(Properties_DrawItem);
imageComboBoxEdit1.Properties.EditValueChanging += new ChangingEventHandler(Properties_EditValueChanging);