asp.net gridview复选框选择 [英] asp.net gridview checkbox selection

问题描述

需要一些帮助来解决这个问题.

Need some help to solve this.

我有一个 gridview，在 gridview 中有一个复选框，单击该复选框后，我正在执行回发事件并尝试仅在数据库上更新此特定行.

I have a gridview and inside the gridview I have a checkbox and after clicking the checkbox, I am doing a postback event and trying to update this particular row only on the database.

这是我的 gridview 复选框代码.请参阅 OnCheckedChanged.

This is my gridview checkbox code. see the OnCheckedChanged.

<asp:TemplateField HeaderText="Sample">
  <ItemTemplate>
     <asp:CheckBox runat="server" 
                   ID="chkSample" 
                   Checked='<%# Bind("Sample") %>' 
                   OnCheckedChanged="UpdateSupplyLed" 
                   AutoPostBack="True">
    </asp:CheckBox> 
  </ItemTemplate>
</asp:TemplateField>

代码:

protected void UpdateSupplyLed(object sender, EventArgs e)
{
    foreach (GridViewRow di in SamplingGridView.Rows)    
    {        
        CheckBox chkBx = (CheckBox)di.FindControl("chkSample");
        if (chkBx != null && chkBx.Checked)
        {
            //update database logic here.
        }
    }
}

上面的代码工作正常，但它让我选中了所有选中的复选框，而与我刚刚选中的复选框无关.我不想要所有的.

The above code works fine but it is getting me all the checkboxes that are checked irresepective of the one that I just checked. I don't want all of them.

如何获取刚刚检查的唯一一行值.某些行可能已被检查，因为这些记录的状态为 true，我不想更新这些记录.

How can I get the only one row value that have been just checked. Some of the rows might have been checked already because the status is true for those records and I don't want to update those records.

我想我的问题是对的！

更新:答案是:

protected void UpdateSupplyLed(object sender, EventArgs e)
{
    CheckBox chkSampleStatus = sender as CheckBox;        
    bool sample = chkSampleStatus.Checked;            
    GridViewRow row = chkSampleStatus.NamingContainer as GridViewRow;        
    TextBox txtId = row.FindControl("Id") as TextBox;            
    int id = Int32.Parse(txtId.Text);
}

推荐答案

试试这个:

CheckBox chkBx = sender as CheckBox;

而不是迭代所有行.

我自己没有以这种方式在 GridView 中使用 CheckBox.通常我会使用 GridView 的 OnRowCommand 事件，并使用 RowIndex 或 CommandArgument 值来更新数据库.

I haven't used CheckBox's in a GridView in this way myself. Usually I would use the GridView's OnRowCommand event instead and use the RowIndex or CommandArgument value to update the database.

考虑到 OnRowcommand 可能很难触发 CheckBox，更好的解决方案可能是坚持使用复选框的 CheckChanged 事件并使用控件 NamingContainer 导航到 GridViewRow 服务器端.类似的东西:

Thinking about it OnRowcommand could be tricky for a CheckBox to fire, a better solution might be sticking with the CheckChanged event of the checkbox and navigate up to the GridViewRow serverside using controls NamingContainer. Something like:

GridViewRow row = chkBx.NamingContainer as GridViewRow;

我假设 CheckBox => Cell => Row 如果您使用 Google ASP.NET NamingContainer，您将获得更多细节.

I'm assuming the goes CheckBox => Cell => Row if you Google ASP.NET NamingContainer you'll get some more specifics.

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