使用复选框从gridview删除

Question

嗨gusy即时通讯试图了解如何从数据库中删除使用grindview与复选框，但我不知道为什么deleteresults.text和DeleteResults.Visible不工作这是我的代码（即编程新:)和thx for你的答案

protected void Button3_Click(object sender, EventArgs e) 
{ 
    bool atLeastOneRowDeleted = false; 
    // Iterate through the Products.Rows property 
    foreach (GridViewRow row in Products.Rows) 
    { 
     // Access the CheckBox 
     CheckBox cb = (CheckBox)row.FindControl("selector"); 
     if (cb != null && cb.Checked) 
     { 
      // Delete row! (Well, not really...) 
      atLeastOneRowDeleted = true; 
      // First, get the ProductID for the selected row 
      int id_offre = Convert.ToInt32(Products.DataKeys[row.RowIndex].Value); 
      // "Delete" the row 
      DeleteResults.Text += string.Format("This would have deleted ProductID {0}<br />", id_offre); 
     } 
    } 
    // Show the Label if at least one row was deleted... 
    DeleteResults.Visible = atLeastOneRowDeleted; 

} 

Answer 1

你有没有设置你的GridView的DataKeyNames财产？您需要这样做才能使用DataKeys[index]。根据MSDN，当您设置DataKeyNames属性时，将会填充DataKeys对象。 http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.datakeys(v=vs.100).aspx。尝试设置该属性，阅读更多关于on MSDN.