RichTextBox.DragEnter Event

Reference

Definition

Namespace:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Occurs when an object is dragged into the control's bounds.

public:
 event System::Windows::Forms::DragEventHandler ^ DragEnter;

[System.ComponentModel.Browsable(false)]
public event System.Windows.Forms.DragEventHandler DragEnter;

[System.ComponentModel.Browsable(false)]
public event System.Windows.Forms.DragEventHandler? DragEnter;

[<System.ComponentModel.Browsable(false)>]
member this.DragEnter : System.Windows.Forms.DragEventHandler

Public Custom Event DragEnter As DragEventHandler

Event Type

DragEventHandler

Attributes: BrowsableAttribute

Examples

The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the DragEnter event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

To run the example code, paste it into a project that contains an instance of type RichTextBox named RichTextBox1. Then ensure that the event handler is associated with the DragEnter event.

private void RichTextBox1_DragEnter(Object sender, DragEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "Data", e.Data );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "KeyState", e.KeyState );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "X", e.X );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Y", e.Y );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "AllowedEffect", e.AllowedEffect );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "Effect", e.Effect );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "DragEnter Event" );
}

Private Sub RichTextBox1_DragEnter(sender as Object, e as DragEventArgs) _ 
     Handles RichTextBox1.DragEnter

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "Data", e.Data)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "KeyState", e.KeyState)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "X", e.X)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Y", e.Y)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "AllowedEffect", e.AllowedEffect)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "Effect", e.Effect)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"DragEnter Event")

End Sub

Remarks

For more information about how to handle events, see Handling and Raising Events.

Applies to

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