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如何修改textbox控件或numbericUpDown控件的文本值或数值或将项目和/或子项添加到listview控件或更新线程内的进度栏,而无需创建多个定义,如新功能和新委托?更新控制线程安全
如何修改textbox控件或numbericUpDown控件的文本值或数值或将项目和/或子项添加到listview控件或更新线程内的进度栏,而无需创建多个定义,如新功能和新委托?更新控制线程安全
我创建了一个线程安全的扩展函数集,用于我创建的一个应用程序所需的一组控件,它需要大量线程更新到窗体。该类直接将方法添加到控件中,因此使访问控件线程安全需要非常少的代码更改。只需将此类添加到您的项目中即可。
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
namespace System.Windows.Forms
{
public static class TSFormExtenders
{
#region Control
public static void SetEnabledTS(this Control x, bool s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetEnabledTS(s);
}));
}
else
{
x.Enabled = s;
}
}
public static bool GetEnabledTS(this Control x, bool def = false)
{
if (x.InvokeRequired)
{
bool m_ret = def;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetEnabledTS();
}));
return m_ret;
}
else
{
return x.Enabled;
}
}
public static void SetTextTS(this Control x, String s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetTextTS(s);
}));
}
else
{
x.Text = s;
}
}
public static String GetTextTS(this Control x, String def = "")
{
if (x.InvokeRequired)
{
String m_ret = def;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetTextTS();
}));
return m_ret;
}
else
{
return x.Text;
}
}
public static void SetVisibleTS(this Control x, bool s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetVisibleTS(s);
}));
}
else
{
x.Visible = s;
}
}
public static bool GetVisibleTS(this Control x, bool def = true)
{
if (x.InvokeRequired)
{
bool m_ret = def;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetVisibleTS();
}));
return m_ret;
}
else
{
return x.Visible;
}
}
public static void SetSizeTS(this Control x, Size s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetSizeTS(s);
}));
}
else
{
x.Size = s;
}
}
public static Size GetSizeTS(this Control x)
{
if (x.InvokeRequired)
{
Size m_ret = new Size();
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetSizeTS();
}));
return m_ret;
}
else
{
return x.Size;
}
}
#endregion
#region CheckBox
public static void SetCheckedTS(this CheckBox x, bool s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetCheckedTS(s);
}));
}
else
{
x.Checked = s;
}
}
public static bool GetCheckedTS(this CheckBox x)
{
if (x.InvokeRequired)
{
bool m_ret = false;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetCheckedTS();
}));
return m_ret;
}
else
{
return x.Checked;
}
}
#endregion
#region NumericUpDown
public static void SetValueTS(this NumericUpDown x, Decimal s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetValueTS(s);
}));
}
else
{
x.Value = s;
}
}
public static Decimal GetValueTS(this NumericUpDown x)
{
if (x.InvokeRequired)
{
Decimal m_ret = 0;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetValueTS();
}));
return m_ret;
}
else
{
return x.Value;
}
}
public static void SetMinTS(this NumericUpDown x, Decimal s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetMinTS(s);
}));
}
else
{
x.Minimum = s;
}
}
public static void SetMaxTS(this NumericUpDown x, Decimal s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetMaxTS(s);
}));
}
else
{
x.Maximum = s;
}
}
#endregion
#region ProgressBar
public static void SetValueTS(this ProgressBar x, Int32 s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetValueTS(s);
}));
}
else
{
x.Value = s;
}
}
public static Int32 GetValueTS(this ProgressBar x)
{
if (x.InvokeRequired)
{
Int32 m_ret = 0;
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
m_ret = x.GetValueTS();
}));
return m_ret;
}
else
{
return x.Value;
}
}
public static void SetMinTS(this ProgressBar x, Int32 s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetMinTS(s);
}));
}
else
{
x.Minimum = s;
}
}
public static void SetMaxTS(this ProgressBar x, Int32 s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.SetMaxTS(s);
}));
}
else
{
x.Maximum = s;
}
}
#endregion
#region ListView
public static void AddItemTS(this ListView x, ListViewItem s)
{
if (x.InvokeRequired)
{
x.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.AddItemTS(s);
}));
}
else
{
x.Items.Add(s);
}
}
public static void AddItemTS(this ListViewItem x, System.Windows.Forms.ListViewItem.ListViewSubItem s)
{
if (x.ListView.InvokeRequired)
{
x.ListView.Invoke(new EventHandler(delegate(object o, EventArgs a)
{
x.AddItemTS(s);
}));
}
else
{
x.SubItems.Add(s);
}
}
#endregion
}
}
我使用[的SynchronizationContext](http://msdn.microsoft.com/en-us/library/system.threading.synchronizationcontext.aspx)(后面的小包装器),其抽象一切出并易于呼叫,以便在呼叫站点保持同步,而无需额外的样板。大多数时候,我发现操作应该一起完成 - 所以将它留在呼叫站点更清洁,更高效,并允许根据需要选择同步或异步行为。 – 2013-03-10 11:31:41