Occurs when an object is dragged into the control's bounds.
(in System.Windows.Forms.dll)
Visual Basic (Declaration)
<BrowsableAttribute(False)> _
Public Event DragEnter As DragEventHandler
Dim instance As RichTextBox
Dim handler As DragEventHandler
AddHandler instance.DragEnter, handler
[BrowsableAttribute(false)]
public event DragEventHandler DragEnter
[BrowsableAttribute(false)]
public:
event DragEventHandler^ DragEnter {
void add (DragEventHandler^ value);
void remove (DragEventHandler^ value);
}
JScript does not support events.
For more information about handling events, see Consuming Events.
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 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
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" );
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference