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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Drawing; | ||
| using System.Linq; | ||
| using System.Text; | ||
| using System.Windows.Forms; | ||
|
|
||
| namespace DigitalPlatform | ||
| { | ||
| /// <summary> | ||
| /// Control 的扩展方法 | ||
| /// </summary> | ||
| public static class ControlExtention | ||
| { | ||
| #region 不会被自动 Dispose 的 子 Control，放在这里托管，避免内存泄漏 | ||
|
|
||
| public static void AddFreeControl(List<Control> controls, | ||
| Control control) | ||
| { | ||
| if (controls.IndexOf(control) == -1) | ||
| controls.Add(control); | ||
| } | ||
|
|
||
| public static void RemoveFreeControl(List<Control> controls, | ||
| Control control) | ||
| { | ||
| controls.Remove(control); | ||
| } | ||
|
|
||
| public static void DisposeFreeControls(List<Control> controls) | ||
| { | ||
| foreach (Control control in controls) | ||
| { | ||
| control.Dispose(); | ||
| } | ||
| controls.Clear(); | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| // 清除控件集合。使用这个函数便于 Dispose() 所清除的控件对象 | ||
| public static void ClearControls(this Control parent, | ||
| bool bDispose = false) | ||
| { | ||
| if (parent.Controls.Count == 0) | ||
| return; | ||
|
|
||
| List<Control> controls = new List<Control>(); | ||
| foreach (Control control in parent.Controls) | ||
| { | ||
| controls.Add(control); | ||
| } | ||
|
|
||
| parent.Controls.Clear(); | ||
| if (bDispose) | ||
| { | ||
| foreach (Control control in controls) | ||
| { | ||
| control.Dispose(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
|
||
| /// <summary> | ||
| /// ScrollableControl 的扩展方法 | ||
| /// </summary> | ||
| public static class ScrollableControlExtention | ||
| { | ||
| public static void SetAutoScrollPosition(this ScrollableControl control, Point p) | ||
| { | ||
| if (p.Y + control.ClientSize.Height > control.DisplayRectangle.Height) | ||
| p.Y = control.DisplayRectangle.Height - control.ClientSize.Height; | ||
| if (p.X + control.ClientSize.Width > control.DisplayRectangle.Width) | ||
| p.X = control.DisplayRectangle.Width - control.ClientSize.Width; | ||
| control.AutoScrollPosition = new Point(p.X, p.Y); | ||
| } | ||
| } | ||
|
|
||
| public static class WebBrowserExtension | ||
| { | ||
| public static void ScrollToEnd(this WebBrowser webBrowser1) | ||
| { | ||
| if (webBrowser1.Document != null | ||
| && webBrowser1.Document.Window != null | ||
| && webBrowser1.Document.Body != null) | ||
| webBrowser1.Document.Window.ScrollTo( | ||
| 0, | ||
| webBrowser1.Document.Body.ScrollRectangle.Height); | ||
| } | ||
| } | ||
|
|
||
| } |
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