是否有办法在检查Box时进行点击? 我正在寻找与布顿相当的东西。 Perform;
I was wondering if someone can tell me what would be the best way to bring my application to the foreground if a mutex was not able to be created for a new instance. E.g.: Application X is running ...
是否有办法在检查Box时进行点击? 我正在寻找与布顿相当的东西。 Perform;
为什么你需要模拟点击,这种编号线是否适合你们的需要?
myCheckBox.Checked = !myCheckBox.Checked;
如果在支票正文变更状态时需要执行逻辑,请使用<编码>Changed,而不是<代码>Click。
private void CheckBox1_CheckedChanged(Object sender, EventArgs e)
{
MessageBox.Show("You are in the CheckBox.CheckedChanged event.");
}
以上这些解决办法称为检查箱。 检查 改变活动。
如果你想明确叫Click活动,你可以这样做:
checkBox1_Click(checkBox1, null);
为什么你们想要在查比奥引发一个点击事件?
如果你想把它的价值引向来:
theCheckBox.Checked = !theCheckBox.Checked;
如果你想启动与浮标事件相关的一些功能,则从<代码>中删除该代码的想法就更好。 Click eventhandler into a separate means that can be calls from any place:
private void theCheckBox_Click(object sender, EventArgs e)
{
HandleCheckBoxClick((CheckBox)sender);
}
private void HandleCheckBoxClick(CheckBox sender)
{
// do what is needed here
}
在你设计像这样的法典时,你可以很容易地从任何地方援引功能:
HandleCheckBoxClick(theCheckBox);
多数控制活动操作者也可(或许应当)采用同样的方法;尽可能从事件处理者转向更可使用的方法。
我不认为你能够以这种方式产生一个点击事件,而不必直接打电话给Box_Click事件手稿。 但你可以这样做:
checkBox.Checked = !checkBox.Checked;
检查 即便是你这样做,也会叫换手。
<代码>ButtonPerformClick(
)>方法验证了活性控制,测试主动控制是否会失去目前的重点。 两种方式可能与<代码>CheckBox相同。 办法1是用思考方式将internal
至Control
:
public class CheckBoxPerformClick : CheckBox {
private readonly static MethodInfo callValidateActiveControl;
private readonly static PropertyInfo propValidationCancelled;
static CheckBoxPerformClick() {
try {
Type ty = typeof(Control);
Type outBool = Type.GetType("System.Boolean&");
callValidateActiveControl = ty.GetMethod("ValidateActiveControl", BindingFlags.Instance | BindingFlags.NonPublic, null, new Type[] { outBool }, null);
propValidationCancelled = ty.GetProperty("ValidationCancelled", BindingFlags.Instance | BindingFlags.NonPublic);
} catch {}
}
public CheckBoxPerformClick() : base() {
this.Text = "Checkbox";
this.Appearance = Appearance.Button;
}
public void PerformClick() {
if (callValidateActiveControl != null && propValidationCancelled != null) {
try {
Object[] args = new Object[1];
bool validate = (bool) callValidateActiveControl.Invoke(this, args);
bool validatedControlAllowsFocusChange = (bool) args[0];
if (validate || validatedControlAllowsFocusChange) {
bool cancelled = (bool) propValidationCancelled.GetValue(this);
if (!cancelled) {
ResetFlagsandPaint();
OnClick(EventArgs.Empty);
}
}
} catch {
}
}
}
}
第2号办法试图做同样的事情,但并不反映:
public class CheckBoxPerformClick2 : CheckBox {
public CheckBoxPerformClick2() : base() {
this.Text = "Checkbox";
this.Appearance = Appearance.Button;
}
public void PerformClick() {
bool validate = CanPerformClick();
if (validate) {
ResetFlagsandPaint();
OnClick(EventArgs.Empty);
}
}
// before allowing a click, make sure this control can receive the focus, and that other controls don t require validation
public bool CanPerformClick() {
if (!CanSelect)
return false;
Control c = this.Parent;
while (c != null) {
if (c is ContainerControl)
break;
c = c.Parent;
}
bool valid = true;
if (c is ContainerControl) {
var cc = (ContainerControl) c;
valid = cc.Validate(true);
}
return valid;
}
}
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