如何创建一个asp：在C＃编程按钮后面（不点击处理） [英] How to create an asp:button programmatically in c# behind (without click handling)

问题描述

下面的按钮提供我所需要的确切功能，但它必须以编程做，因为我将作出一个以上的基于一些变数，但后者我可以计算出，如果我可以只创建下面的按钮作为首发

 ＆LT; ASP：按钮=服务器按需=Load_ItemsCommandArgument =1文本=提交/＆GT;
 

这是我一直在做的更多信息<一个href=\"http://stackoverflow.com/questions/17884044/method-being-triggered-on-page-load-but-not-via-asp-button/\">here.

编辑：

我看过的问题这样，但看不到哪里去，从按钮btnSave =新按钮（）; 来看到网页上的按钮。另外，我发现大多数问题似乎去使用C＃来处理一下，但我想有一个按需属性来处理它。

如果我执行下列操作，并使用开发工具BTN搜索，我没有得到任何结果。

 按钮btnSave =新按钮（）;
btnSave.ID =btnSave;
btnSave.Text =保存;
btnSave.CssClass =BTN;
 

解决方案

下面是你如何创建Command事件的按钮。

一旦被创建，你需要找到显示它的方式。下面的示例使用占位符;你也可以用替换面板如果你想。

ASPX

 ＆LT; ASP：占位符=服务器ID =PLACEHOLDER1＆GT;＆LT; / ASP：占位符＆GT;
 

code

的背后

 保护无效的Page_Load（对象发件人，EventArgs的发送）
{
    的for（int i = 0;我小于5;我++）
    {
        VAR按钮=新的Button
        {
            ID =按钮+ I，
            CommandArgument = i.ToString（），
            文本=提交+ I
        };
        button.Command + = Load_Items;
        PlaceHolder1.Controls.Add（按钮）;
    }
}私人无效Load_Items（对象发件人，CommandEventArgs E）
{
    INT ID = Convert.ToInt32（e.CommandArgument）;
    //使用ID的东西
}
 

The following button provides the exact functionality I require, but it must be done programmatically as I will be making more than one based on some variables, but the latter I can figure out if I can just create the button below as a starter:

<asp:Button runat="server" OnCommand="Load_Items" CommandArgument="1" text="Submit" />

More information on what I've been doing here.

Edit:

I have looked at questions like this, but don't see where to go from Button btnSave = new Button(); to seeing a button on the page. Also, most questions I've found seem to go about using C# to handle clicking, but I want to have an OnCommand property to handle it.

If I do the following and search using the developer tools for "btn", I get no results.

Button btnSave = new Button();
btnSave.ID = "btnSave";
btnSave.Text = "Save";
btnSave.CssClass = "btn";

解决方案

Here is how you create a Button with Command event.

Once it is created, you need to find a way of displaying it. The following example uses PlaceHolder; you can also substitute with Panel if you want.

ASPX

<asp:PlaceHolder runat="server" ID="PlaceHolder1"></asp:PlaceHolder>

Code Behind

protected void Page_Load(object sender, EventArgs e)
{
    for (int i = 0; i < 5; i++)
    {
        var button = new Button
        {
            ID = "Button" + i,
            CommandArgument = i.ToString(),
            Text = "Submit" + i
        };
        button.Command += Load_Items;
        PlaceHolder1.Controls.Add(button);
    }
}

private void Load_Items(object sender, CommandEventArgs e)
{
    int id = Convert.ToInt32(e.CommandArgument);
    // Do something with id
}

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