以编程方式单击复选框

为什么您需要模拟单击,这行代码不符合您的需要吗?

myCheckBox.Checked = !myCheckBox.Checked;

CheckedChanged 事件而不是 Click .

private void CheckBox1_CheckedChanged(Object sender, EventArgs e)
{
   MessageBox.Show("You are in the CheckBox.CheckedChanged event.");
}

如果要切换其值:

theCheckBox.Checked = !theCheckBox.Checked;

如果您想触发连接到单击事件的某些功能,最好将代码从 Click 事件处理程序转换为可从任何位置调用的单独方法:

private void theCheckBox_Click(object sender, EventArgs e)
{
    HandleCheckBoxClick((CheckBox)sender);
}

private void HandleCheckBoxClick(CheckBox sender)
{
    // do what is needed here
}

当您这样设计代码时,您可以从任何地方轻松调用该功能:

HandleCheckBoxClick(theCheckBox);

同样的方法可以(也许应该)用于大多数控制事件处理程序;将尽可能多的代码从事件处理程序中移出,并移入可重用性更强的方法中。

上述解决方案调用Checkbox.CheckedChanged事件。

如果要显式调用Click事件,可以执行以下操作:

checkBox1_Click(checkBox1, null);

我仍在设置一个新的工作站,所以目前无法对此进行适当的研究,但是 UI Automation 可能复选框支持 IInvokeProvider 你可以使用 Invoke 方法?

我认为,如果不直接调用复选框\单击事件处理程序,就无法以这种方式生成单击事件。但你可以这样做:

checkBox.Checked = !checkBox.Checked;

这个 Button PerformClick() CheckBox . 方法#1是使用反射来调用 internal 到 Control 类别:

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 {
            }
        }
    }
}

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;
    }
}

您没有指定复选框控件的类型。ASP.net还是Windows?

从代码隐藏调用JavaScript函数

步骤1添加Javascript代码

<script type="text/javascript" language="javascript">
    function Func() {
        alert("hello!")
    }
</script>

步骤3:在按钮单击事件中添加此代码

ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "text", "Func()", true);