【资源文件】asp.net中资源文件的使用

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asp.net中资源文件的使用

using System;
using System.Drawing;
using System.Windows.Forms;
namespace Snip_DragNDrop
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox ListDragSource;
private System.Windows.Forms.ListBox ListDragTarget;
private System.Windows.Forms.CheckBox UseCustomCursorsCheck;
private System.Windows.Forms.Label DropLocationLabel;
private int indexOfItemUnderMouseToDrag;
private int indexOfItemUnderMouseToDrop;
private Rectangle dragBoxFromMouseDown;
private Point screenOffset;
private Cursor MyNoDropCursor;
private Cursor MyNormalCursor;
/// The main entry point for the application.
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
public Form1()
{
this.ListDragSource=new System.Windows.Forms.ListBox();
this.ListDragTarget=new System.Windows.Forms.ListBox();
this.UseCustomCursorsCheck=new System.Windows.Forms.CheckBox();
this.DropLocationLabel=new System.Windows.Forms.Label();
this.SuspendLayout();
// ListDragSource
this.ListDragSource.Items.AddRange(new object[] {"one", "two", "three", "four",
"five", "six", "seven", "eight",
"nine", "ten"});
this.ListDragSource.Location=new System.Drawing.Point(10, 17);
this.ListDragSource.Size=new System.Drawing.Size(120, 225);
this.ListDragSource.MouseDown +=new System.Windows.Forms.MouseEventHandler(this.ListDragSource_MouseDown);
this.ListDragSource.QueryContinueDrag +=new System.Windows.Forms.QueryContinueDragEventHandler(this.ListDragSource_QueryContinueDrag);
this.ListDragSource.MouseUp +=new System.Windows.Forms.MouseEventHandler(this.ListDragSource_MouseUp);
this.ListDragSource.MouseMove +=new System.Windows.Forms.MouseEventHandler(this.ListDragSource_MouseMove);
this.ListDragSource.GiveFeedback +=new System.Windows.Forms.GiveFeedbackEventHandler(this.ListDragSource_GiveFeedback);
// ListDragTarget
this.ListDragTarget.AllowDrop=true;
this.ListDragTarget.Location=new System.Drawing.Point(154, 17);
this.ListDragTarget.Size=new System.Drawing.Size(120, 225);
this.ListDragTarget.DragOver +=new System.Windows.Forms.DragEventHandler(this.ListDragTarget_DragOver);
this.ListDragTarget.DragDrop +=new System.Windows.Forms.DragEventHandler(this.ListDragTarget_DragDrop);
this.ListDragTarget.DragEnter +=new System.Windows.Forms.DragEventHandler(this.ListDragTarget_DragEnter);
this.ListDragTarget.DragLeave +=new System.EventHandler(this.ListDragTarget_DragLeave);
// UseCustomCursorsCheck
this.UseCustomCursorsCheck.Location=new System.Drawing.Point(10, 243);
this.UseCustomCursorsCheck.Size=new System.Drawing.Size(137, 24);
this.UseCustomCursorsCheck.Text="Use Custom Cursors";
// DropLocationLabel
this.DropLocationLabel.Location=new System.Drawing.Point(154, 245);
this.DropLocationLabel.Size=new System.Drawing.Size(137, 24);
this.DropLocationLabel.Text="None";
// Form1
this.ClientSize=new System.Drawing.Size(292, 270);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.ListDragSource,
this.ListDragTarget, this.UseCustomCursorsCheck,
this.DropLocationLabel});
this.Text="drag-and-drop Example";
this.ResumeLayout(false);
}
private void ListDragSource_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Get the index of the item the mouse is below.
indexOfItemUnderMouseToDrag=ListDragSource.IndexFromPoint(e.X, e.Y);
if (indexOfItemUnderMouseToDrag !=ListBox.NoMatches) {
// Remember the point where the mouse down occurred. The DragSize indicates
// the size that the mouse can move before a drag event should be started.
Size dragSize=SystemInformation.DragSize;
// Create a rectangle using the DragSize, with the mouse position being
// at the center of the rectangle.
dragBoxFromMouseDown=new Rectangle(new Point(e.X - (dragSize.Width /2),
e.Y - (dragSize.Height /2)), dragSize);
} else
// Reset the rectangle if the mouse is not over an item in the ListBox.
dragBoxFromMouseDown=Rectangle.Empty;
}
private void ListDragSource_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) {
// Reset the drag rectangle when the mouse button is raised.
dragBoxFromMouseDown=Rectangle.Empty;
}
private void ListDragSource_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
if ((e.Button & MouseButtons.Left)==MouseButtons.Left) {
// If the mouse moves outside the rectangle, start the drag.
if (dragBoxFromMouseDown !=Rectangle.Empty &&
!dragBoxFromMouseDown.Contains(e.X, e.Y)) {
// Create custom cursors for the drag-and-drop operation.
try {
MyNormalCursor=new Cursor("3dwarro.cur");
MyNoDropCursor=new Cursor("3dwno.cur");
} catch {
// An error occurred while attempting to load the cursors, so use
// standard cursors.
UseCustomCursorsCheck.Checked=false;
}finally {
// The screenOffset is used to account for any desktop bands
// that may be at the top or left side of the screen when
// determining when to cancel the drag drop operation.
screenOffset=SystemInformation.WorkingArea.Location;
// Proceed with the drag-and-drop, passing in the list item.
DragDropEffects dropEffect=ListDragSource.DoDragDrop(ListDragSource.Items[indexOfItemUnderMouseToDrag], DragDropEffects.All | DragDropEffects.Link);
// If the drag operation was a move then remove the item.
if (dropEffect==DragDropEffects.Move) {
ListDragSource.Items.RemoveAt(indexOfItemUnderMouseToDrag);
// Selects the previous item in the list as long as the list has an item.
if (indexOfItemUnderMouseToDrag > 0)
ListDragSource.SelectedIndex=indexOfItemUnderMouseToDrag -1;
else if (ListDragSource.Items.Count > 0)
// Selects the first item.
ListDragSource.SelectedIndex=0;
}
// Dispose of the cursors since they are no longer needed.
if (MyNormalCursor !=null)
MyNormalCursor.Dispose();
if (MyNoDropCursor !=null)
MyNoDropCursor.Dispose();
}
}
}
}
private void ListDragSource_GiveFeedback(object sender, System.Windows.Forms.GiveFeedbackEventArgs e)
{
// Use custom cursors if the check box is checked.
if (UseCustomCursorsCheck.Checked) {
// Sets the custom cursor based upon the effect.
e.UseDefaultCursors=false;
if ((e.Effect & DragDropEffects.Move)==DragDropEffects.Move)
Cursor.Current=MyNormalCursor;
else
Cursor.Current=MyNoDropCursor;
}
}
private void ListDragTarget_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
{
// Determine whether string data exists in the drop data. If not, then
// the drop effect reflects that the drop cannot occur.
if (!e.Data.GetDataPresent(typeof(System.String))) {
e.Effect=DragDropEffects.None;
DropLocationLabel.Text="None - no string data.";
return;
}
// Set the effect based upon the KeyState.
if ((e.KeyState & (8+32))==(8+32) &&
(e.AllowedEffect & DragDropEffects.Link)==DragDropEffects.Link) {
// KeyState 8 + 32=CTL + ALT
// Link drag-and-drop effect.
e.Effect=DragDropEffects.Link;
} else if ((e.KeyState & 32)==32 &&
(e.AllowedEffect & DragDropEffects.Link)==DragDropEffects.Link) {
// ALT KeyState for link.
e.Effect=DragDropEffects.Link;
} else if ((e.KeyState & 4)==4 &&
(e.AllowedEffect & DragDropEffects.Move)==DragDropEffects.Move) {
// SHIFT KeyState for move.
e.Effect=DragDropEffects.Move;
} else if ((e.KeyState & 8)==8 &&
(e.AllowedEffect & DragDropEffects.Copy)==DragDropEffects.Copy) {
// CTL KeyState for copy.
e.Effect=DragDropEffects.Copy;
} else if ((e.AllowedEffect & DragDropEffects.Move)==DragDropEffects.Move) {
// By default, the drop action should be move, if allowed.
e.Effect=DragDropEffects.Move;
} else
e.Effect=DragDropEffects.None;
// Get the index of the item the mouse is below.
// The mouse locations are relative to the screen, so they must be
// converted to client coordinates.
indexOfItemUnderMouseToDrop=
ListDragTarget.IndexFromPoint(ListDragTarget.PointToClient(new Point(e.X, e.Y)));
// Updates the label text.
if (indexOfItemUnderMouseToDrop !=ListBox.NoMatches){
DropLocationLabel.Text="Drops before item #" + (indexOfItemUnderMouseToDrop + 1);
} else
DropLocationLabel.Text="Drops at the end.";
}
private void ListDragTarget_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
{
// Ensure that the list item index is contained in the data.
if (e.Data.GetDataPresent(typeof(System.String))) {
Object item=(object)e.Data.GetData(typeof(System.String));
// Perform drag-and-drop, depending upon the effect.
if (e.Effect==DragDropEffects.Copy ||
e.Effect==DragDropEffects.Move) {
// Insert the item.
if (indexOfItemUnderMouseToDrop !=ListBox.NoMatches)
ListDragTarget.Items.Insert(indexOfItemUnderMouseToDrop, item);
else
ListDragTarget.Items.Add(item);
}
}
// Reset the label text.
DropLocationLabel.Text="None";
}
private void ListDragSource_QueryContinueDrag(object sender, System.Windows.Forms.QueryContinueDragEventArgs e) {
// Cancel the drag if the mouse moves off the form.
ListBox lb=sender as ListBox;
if (lb !=null) {
Form f=lb.FindForm();
// Cancel the drag if the mouse moves off the form. The screenOffset
// takes into account any desktop bands that may be at the top or left
// side of the screen.
if (((Control.MousePosition.X - screenOffset.X) < f.DesktopBounds.Left) ||
((Control.MousePosition.X - screenOffset.X) > f.DesktopBounds.Right) ||
((Control.MousePosition.Y - screenOffset.Y) < f.DesktopBounds.Top) ||
((Control.MousePosition.Y - screenOffset.Y) > f.DesktopBounds.Bottom)) {
e.Action=DragAction.Cancel;
}
}
}
private void ListDragTarget_DragEnter(object sender, System.Windows.Forms.DragEventArgs e) {
// Reset the label text.
DropLocationLabel.Text="None";
}
private void ListDragTarget_DragLeave(object sender, System.EventArgs e) {
// Reset the label text.
DropLocationLabel.Text="None";
}
}
}

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