ASP.NET编程添加按钮与事件 [英] ASP.NET Programmatically adding button with an event

问题描述

我想提出一个动态表，只要单击添加行按钮，将添加行。
我以编程方式创建按钮并将其添加到表头。
低于该按钮，并在同一列上会有删除行按钮太

I am making a dynamic table that will add rows whenever the add row button is clicked. I am creating the button programmatically and adding it to the table header. Below that button, and on the same column there will be delete row buttons too.

我虽然有一个问题，当我点击该按钮时，不会被调用的事件。我是不是正确的创建按钮？如果没有，那我怎么办呢？如果我的话，你知道是什么问题？

I am having a problem though, when I click the button, the event is not being called. Am I creating the button correctly? If not, then how do I do it? If I am, then do you know what the problem is?

    TableHeaderCell thcOne = new TableHeaderCell();
    TableHeaderCell thcTwo = new TableHeaderCell();
    TableHeaderCell thcThree = new TableHeaderCell();
    TableHeaderCell thcrFour = new TableHeaderCell();
    TableHeaderCell thcFive = new TableHeaderCell();
    TableCell thcRowAction = new TableCell(); //THIS IS THE COLUMN WITH THE 
                                              //ADD BUTTON

    thcOne.Text = "Who";
    thcTwo.Text = "Date Started";
    thcThree.Text = "Date Ended";
    thcrFour.Text = "Causes?";
    thcFive.Text = "Result";

            //HERE IS WHERE I CREATE AND ADD THE BUTTON

    Button addRowButton = new Button();
    addRowButton.Text = "Add Row";
    addRowButton.Click += new EventHandler(this.AddNewRow_Click);
    thcRowAction.Controls.Add(addRowButton);

    TableHeaderRow headerRow = new TableHeaderRow();
    headerRow.Cells.Add(thcOne);
    headerRow.Cells.Add(thcTwo);
    headerRow.Cells.Add(thcThree);
    headerRow.Cells.Add(thcrFour);
    headerRow.Cells.Add(thcFive);
    headerRow.Cells.Add(thcRowAction);

    table.Rows.Add(headerRow);

    #endregion


protected void AddNewRow_Click(object sender, EventArgs e)
    {
        if (ViewState["RowsCount"] != null)
        {
            numOfRows = Convert.ToInt32(ViewState["RowsCount"]);
            GenerateTable(numOfRows);
        }
    }

再一次，将出现按钮，但它并没有输入正确的事件方法。
感谢您的帮助和时间：）

Once again, the button appears, but it does not enter the correct event method. Thanks for your help and time :)

顺便说一句，当我做到这一点声明，例如：

By the way when I do it declaratively such as:

<asp:Button ID="BTNAdd" runat="server" Text="Add New Row" OnClick="AddNewRow_Click" />

该事件将注册并运行完全正常。

the event will register and work completely fine.

最新资讯：
我也出现过一个删除按钮，我没有用它注册任何类型的事件，但是当我点击它，它做同样的事情作为添加行按钮，可这是因为母版页或不同的源告诉按钮首先应该做什么或默认？

NEW INFO: I have a delete button appearing too, I did not register any type of event with it, but when I click it, it does the exact same thing as the add row button, could this be because the master page or a different source is telling the buttons what to do first or by default?

感谢：）

推荐答案

您应该添加动态控件在页面的Init事件处理程序，以便ViewState中和事件触发适当

You should add the dynamic controls in the Page's Init event handler so that the ViewState and Events are triggered appropriately.

试着这样做：

protected void Page_Init(object sender, EventArgs e)     
     {         
         Button btn = new Button();         
        btn.ID = "btnTest";         
         btn.Text = "I was dynamically created";         
         btn.Click += new EventHandler(btnTest_Click);         
        Panel1.Controls.Add(btn);     
     }

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