Question

如何使多个参数多于两个？ CustomButtonClickEventArgs是很多地方共享的，我不想修改。如何附加ActiveRow和ActiveCol参数，这些参数将Grid中的ComboBox位置指向ComboBoxCustomButtonClick事件，就像我预期的那样？

private void MyUC1_ComboBoxCustomButtonClick(object sender, MyUC.CustomButtonClickEventArgs e, int ActiveRow, int ActiveCol)

声明：

public class CustomButtonClickEventArgs : EventArgs
    {
        public readonly int Index;

        public readonly string Key;

        public readonly string Tag;

        public readonly Keys ModifierKeys;

        public CustomButtonClickEventArgs(int index, string key, string tag, Keys modifierKeys)
        {
            this.Index = index;
            this.Key = key;
            this.Tag = tag;
            this.ModifierKeys = modifierKeys;
        }
    }

public delegate void CustomButtonClickEventHandler(object sender, CustomButtonClickEventArgs e);

ComboBox located in Grid Cell(1,1)

Answer 1

您刚刚定义了事件参数（EventArgs）。您需要的是一个委托，它定义了该方法的外观。

也许是这样的？

public delegate void CustomButtonClickEventHandler(object sender, MyUC.CustomButtonClickEventArgs e, int ActiveRow, int ActiveCol);

定义事件时，需要此委托：

public event CustomButtonClickEventHandler ComboBoxCustomButtonClick;

Answer 2

我的新CustomButtonClickEventHandler定义如下。

public delegate void ComboBoxCustomButtonClickEventHandler(object Sender, int ComboBoxCol, int ActiveRow, int ActiveCol, CustomButtonClickEventArgs e);

[Category("ComboBox"), Description("Occurs when a custom button of the ComboBox is clicked.")]
public event ComboBoxCustomButtonClickEventHandler ComboBoxCustomButtonClick;

带有多个参数的C＃事件

2 个答案: