如何以编程方式添加一个按钮到GridView并将其分配给特定的code隐藏功能？ [英] How do I programmatically add a button to a gridview and assign it to a specific code-behind function?

问题描述

嘿！
在运行时我创建一个DataTable，并使用嵌套的for循环来填充表。这个表我后来指定为数据源到GridView和我的RowDataBound分配每个单元格的值。我想知道我怎么可以给每一个小区的按钮，并分配一个按钮，一个codebehind功能。我将有12个按键，每一个包含不同的值。我将preFER如果它们都称与某种事件的存储该特定于小区的值相同的功能。

Hey! In runtime I'm creating a DataTable and using nested for-loops to populate the table. This table I later assign as DataSource to a gridview and on RowDataBound I assign the value of each cell. I want to know how I can give each cell a button and assign that button to a codebehind function. I'll have 12 buttons and each one will contain a different value. I would prefer if they all call the same function with some kind of event that stores the cell-specific value.

这是在哪里得到表创建的code：

This is the code where the Table gets created:

protected void GridViewDice_RowDataBound(object sender, GridViewRowEventArgs e)
{


    DataTable diceTable = _gm.GetDice(_gameId);
    for (int i = 0; i < GameRules.ColumnsOfDice; i++)
    {
        if(e.Row.RowIndex > -1)
        {
            /*This is where I'd like to add the button*/
            //e.Row.Cells[i].Controls.Add(new Button);
            //e.Row.Cells[i].Controls[0].Text = specific value from below

            //This is where the specific value gets input
            e.Row.Cells[i].Text = diceTable.Rows[e.Row.RowIndex][i].ToString();
        }

    }
}

我想用这样的事情来处理buttonclick：

I would like to handle the buttonclick with something like this:

protected void DiceButton_Click(int column, int row, int value)
{
    //Do whatever
}

有什么建议？

推荐答案

在中标记你的GridView，分配CommandArgument属性要取其（这里我选择当前gridviewrow的指数）在您的按钮内。

On your gridview in markup, assign CommandArgument attribute to whichever you want (here I choose the index of the current gridviewrow) inside the your buttons.

 <asp:Button ID="lbnView" runat="server" Text="Button" OnClick="btn_Clicked" 
CommandArgument="<%# ((GridViewRow)Container).RowIndex %>"></asp:Button>

或者在你的code的后面，可以在下方

Or in your code behind, you can create a button like below

protected void GridViewDice_RowDataBound(object sender, GridViewRowEventArgs e) 
{ 


    DataTable diceTable = _gm.GetDice(_gameId); 
    for (int i = 0; i < GameRules.ColumnsOfDice; i++) 
    { 
        if(e.Row.RowIndex > -1) 
        { 
            Button btn = new Button();
            btn.CommandArgument = diceTable.Rows[e.Row.RowIndex][i].ToString(); 
            btn.Attributes.Add("OnClick", "btn_Clicked");

            e.Row.Cells[i].Controls.Add(btn);
        }
    }
}

然后做出一个事件处理程序像下面

then make an event handler like below

protected void btn_Clicked(object sender, EventAgrs e)
{
   //get your command argument from the button here
   if (sender is Button)
   {
     try
     {
        String yourAssignedValue = ((Button)sender).CommandArgument;
     }
     catch
     {
       //Check for exception
     }
   }
}

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