从codebehind按钮：添加ASP [英] Add asp:Button from codebehind

问题描述

我在codebehind建设。该表是一个数据库记录的列表（每行一个记录），我neeed添加一个删除按钮的每一行。要做到这一点，我当然需要建立一个按钮，为一个唯一的ID。要做到这一点，我想出了下面的... ...这是行不通的。关于如何得到这个工作有什么建议？

 按钮deleteButton =新按钮（）;
deleteButton.ID =deleteStudentWithID+ singleStudent.ID.ToString（）;
deleteButton.Text =X;字串行=＆LT; TR＆gt;中;
排+ =＆LT; TD类= \\青青草地\\＆gt;中+ deleteButton.ClientID +＆LT; / TD＆gt;中;
排+ =＆LT; / TR＆gt;中;
 

解决方案

您的问题是，您要添加仅客户端ID 你的控制到HTML，并且不添加控制页面本身。

  Controls.Add被（新LiteralControl（＆LT;表＆gt;））;的foreach（学生VAR singleStudent）
{
    Controls.Add被（新LiteralControl（＆所述; TR＆gt;中））;    // code以添加其他列    按钮deleteButton =新按钮（）;
    deleteButton.ID =deleteStudentWithID+ singleStudent.ID.ToString（）;
    deleteButton.Text =X;    Controls.Add被（新LiteralControl（＆下; TD类= \\青青草地\\＆gt;中））;
    Controls.Add被（deleteButton）;
    Controls.Add被（新LiteralControl（＆下; / TD＆GT;＆下; / TR＆gt;中）;
}Controls.Add被（新LiteralControl（＆LT; /表＆gt;））;
 

I'm building a in codebehind. The table is a listing of a database records (one record per row) and I neeed to add a delete button for each row. To do that, I of course need to build a button with a unique ID for that. To do that, I came up with the following ... which doesn't work. Any tips on how to get this working?

Button deleteButton = new Button();
deleteButton.ID = "deleteStudentWithID" + singleStudent.ID.ToString();
deleteButton.Text = "X";

string row = "<tr>";
row += "<td class=\"style5\">"+deleteButton.ClientID +"</td>";
row += "</tr>";

解决方案

Your problem is that you're adding only the ClientID of your control to the html and not adding the control to the page itself.

Controls.Add(new LiteralControl("<table>"));

foreach(var singleStudent in students)
{
    Controls.Add(new LiteralControl("<tr>"));

    //Code to add other columns

    Button deleteButton = new Button();
    deleteButton.ID = "deleteStudentWithID" + singleStudent.ID.ToString();
    deleteButton.Text = "X";

    Controls.Add(new LiteralControl("<td class=\"style5\">"));
    Controls.Add(deleteButton);
    Controls.Add(new LiteralControl("</td></tr>");
}

Controls.Add(new LiteralControl("</table>"));

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