Question

我在动态创建的Tab上为动态创建的按钮创建点击事件时遇到问题。我一直抛出异常。该程序为目录中的每个目录创建一个Tab，然后创建一个“+”按钮，该按钮应允许用户向页面添加更多文本框。

以下是标签创建代码：

    private void addTabs(int tab_Number, string assetName)
    {

        TabPage newTab = new TabPage(assetName);
        prjct_Directory_Setup_Tab.TabPages.Add(newTab);

        // tabs need a unique id to maintain state information
        newTab.Name = "Tab_" + tab_Number;

        // add text to the tabs
        newTab.Text = assetName;

        //Add tab Labels
        Tab_labelPositions(assetName, newTab);

        //Create a new flow panel
        FlowLayoutPanel mainTabFlowPanel = new FlowLayoutPanel();

        //Add the control to the tab page
        mainTabFlowPanel.AutoScroll = true;
        mainTabFlowPanel.AutoSize = true;
        mainTabFlowPanel.FlowDirection = FlowDirection.TopDown;
        mainTabFlowPanel.Location = new Point(13, 134);

        //Add the control to the tab page
        newTab.Controls.Add(mainTabFlowPanel);

        //Add the picture folder labels to the flow panel
        findAllFolders_inAssetFolder(assetName, newTab, mainTabFlowPanel);

        Point buttonLocale = new Point(156, 22);
        String addFolders = "addFolders" + tab_Number;
        //createButton(buttonLocale, "+", addFolders, newTab);

        Button newButton = new Button();

        //create a new size
        Size buttonSize = new System.Drawing.Size(75, 33);

        //setup the button
        newButton.Name = addFolders;
        newButton.Text = "+";
        newButton.Location = buttonLocale;
        newButton.Size = buttonSize;

        newButton.Click += new EventHandler(this.newButton_Clicked);     

    }

非常感谢您的帮助！

Answer 1

使用

....
Button newButton = new Button();    
newButton.OnClick += (s, p) => { your onclick code here };
...

或者

....
Button newButton = new Button();    
newButton.OnClick += newButtonOnClick; //where newButtonOnClick is a method you define in your class

private void newButtonOnClick(object sender, EventArgs e) 
{
    //insert code here
}


...

在动态创建的选项卡上为动态创建的按钮创建单击事件

1 个答案: