动态创建按钮来调用方法，并传递参数 [英] create buttons dynamically to call method and pass in parameter

问题描述

我有一个键值对的字典，需要遍历对，并创造每一个及导线上按钮调用的方法DisplayDocument（字符串ID）的按钮，并通过在Key作为参数。

I have a dictionary with a key value pair and need to loop through the pairs and create a button for each one and wire up the button to call a method DisplayDocument(string Id) and pass in the Key as a parameter.

下面是我有这么远。<​​/ P>

Here's what I have so far.

        // test data
        var documents= new Dictionary<string,string>();
        documents.Add("69110","Diploma");
        documents.Add("76404", "Licensure");


        foreach (KeyValuePair<string, string> item in documents)
        {

            MyStringBuilder=MyStringBuilder.Append(item.Value + "   " + item.Key + "<br />"); 

        }
        printFaxDocuments.InnerHtml = MyStringBuilder.ToString();

我想要做的就是打印出来的文件键和值，然后一个按钮，使用可以点击查看文档。我建立了查看文档的方法，它需要传递的键值。我怎样才能做到这一点？

What i want to do is print out the document Key and Value and then a button that the use can click to view the document. I have the method built to view the document and it requires the Key value to be passed in. How can I do this?

我不知道如何在点缀文本数据的按钮。我需要写出来的键和值添加按钮添加一个＆LT; BR /＆gt;中，然后在词典中的下一个项目再次做同样的事情。

I'm not sure how to intersperse the button in the text data. I need to write out the key and value add the button add a "<br/>" and then do the same thing again for the next item in the dictionary.

推荐答案

下面我在OnInit方法创建的Button控件和他们每个人分配了相同的Click事件处理程序。

Below I have created the Button controls in the OnInit method and assigned each of them the same Click event handler.

密钥存储在其中的事件处理程序检索并传递给DisplayDocument方法按钮CommandArgument属性。

The Key is stored in the Buttons CommandArgument property which is retrieved in the event handler and passed to the DisplayDocument method.

protected override void OnInit(EventArgs e)
{
    // test data
    var documents = new Dictionary<string, string>();
    documents.Add("69110", "Diploma");
    documents.Add("76404", "Licensure");

    foreach (KeyValuePair<string, string> item in documents)
    {
        Button button = new Button();
        button.Text = string.Format("Button: {0}", item.Key);
        button.CommandArgument = item.Key;
        button.Click += ButtonClicked;

        ButtonContainer.Controls.Add(button);
    }

    base.OnInit(e);
}

protected void ButtonClicked(object sender, EventArgs e)
{
    Button button = (Button) sender;
    string id = button.CommandArgument;

    DisplayDocument(id);
}

private void DisplayDocument(string id)
{
    //Do something
}

修改

您可能最好使用CSS来设置按钮的布局。

You are probably better off using CSS to set the layout for the Buttons.

尝试添加以下CSS类到你的页面（或样式表文件）的头

Try adding the following CSS class to the head of your page (or stylesheet file)

<style type="text/css">
    .stacked-button
    {
        display:block;
    }
</style>

然后添加以下按钮创建code：

And then add the following to the button creation code:

button.CssClass = "stacked-button";

您就可以添加到CSS类为需要修改布局（页边距等）

You can then add to the CSS class as required to modify the layout (margins etc.)

希望这有助于。

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