如何使用Ajax ModalPopUpExtender控件更新GridView中的特定列？

我是一名新的ASP.NET开发人员，我正在为我的公司开发一个基于Web的建议框程序，员工可以在其中提交任何安全建议。现在，我正在研究这个系统的管理部分。如何使用Ajax ModalPopUpExtender控件更新GridView中的特定列？

管理员将能够看到GridView控件中列出的所有建议。在GridView的最后一列中，状态将在那里列出。当管理员点击其中一个建议的状态时，会出现一个新的弹出窗口（asp.net ajax ModalPopUpExtender），列出所有可能的状态，如：已执行，已批准...等。选择其中一种状态，建议的状态将在数据库中更新。 我写的代码，但仍然不更新的建议的状态，

所以请你帮我修改吗？

仅供参考，我有以下的数据库设计：

Employee Table: Username, Name... 
SafetySuggestionsLog: ID, Title, Description, Username, StatusID 
SafetySuggestionsStatus: ID, Status

ASP.NET代码：

<asp:UpdatePanel ID="UpdatePanel1" runat="server"> 
      <ContentTemplate> 
     <asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
         AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="ID" 
         width="900px" CssClass="mGrid" 
         DataSourceID="SqlDataSource1" 
         OnRowDataBound="GridView1_RowDataBound"> 
      <AlternatingRowStyle BackColor="White" ForeColor="#284775" CssClass="alt" /> 
      <HeaderStyle Font-Bold = "True" ForeColor="Black" Height="20px"/> 
      <Columns> 
       <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" 
        ReadOnly="True" SortExpression="ID" /> 
       <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" /> 
       <asp:BoundField DataField="Description" HeaderText="Description" 
        SortExpression="Description" /> 
       <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" /> 
       <asp:BoundField DataField="Username" HeaderText="Username" 
        SortExpression="Username" /> 
       <asp:BoundField DataField="DivisionShortcut" HeaderText="DivisionShortcut" 
        SortExpression="DivisionShortcut" /> 
       <asp:BoundField DataField="Type" HeaderText="Type" SortExpression="Type" /> 

       <%-- This to make status be opened and edited through the Ajax ModalPopUp Window --%> 
       <asp:TemplateField HeaderText="Status"> 
        <ItemTemplate> 
         <asp:LinkButton runat="server" ID="lnkSuggestionStatus" Text='<%#Eval("Status")%>' 
             OnClick="lnkSuggestionStatus_Click"> 
         </asp:LinkButton> 
        </ItemTemplate> 
       </asp:TemplateField> 

       <%--<asp:HyperLinkField HeaderText="Status" 
        SortExpression="Status" />--%> 
      </Columns> 
      <RowStyle HorizontalAlign="Center" /> 
     </asp:GridView> 

     <asp:Button runat="server" ID="btnModalPopUp" style="display:none" /> 

     <AjaxToolkit:ModalPopUpExtender ID="modalPopUpExtender1" 
             runat="server" 
             TargetControlID="btnModalPopUp" 
             PopupControlID="pnlPopUp" 
             BackgroundCssClass="popUpStyle" 
             PopupDragHandleControlID="panelDragHandle" 
             OkControlID="OKButton"> 
     </AjaxToolkit:ModalPopUpExtender> 

     <asp:Panel runat="server" ID="pnlPopUp"> 

        <asp:RadioButtonList ID="StatusList" runat="server" RepeatColumns="1" RepeatDirection="Vertical" 
              RepeatLayout="Table" TextAlign="Left" DataSourceID="SuggestionStatusDataSource" 
              DataTextField="Status" DataValueField="ID"> 
         <asp:ListItem id="option1" runat="server" Value="ACTIONED" /> 
         <asp:ListItem id="option2" runat="server" Value="APPROVED" /> 
         <asp:ListItem id="option3" runat="server" Value="PENDING" /> 
         <asp:ListItem id="option4" runat="server" Value="TRANSFERRED" /> 
        </asp:RadioButtonList> 
        <asp:SqlDataSource ID="SuggestionStatusDataSource" runat="server" 
             ConnectionString="<%$ ConnectionStrings:testConnectionString %>" 
             SelectCommand="SELECT * FROM [SafetySuggestionsStatus]"></asp:SqlDataSource> 

        <asp:Button ID="confirmButton" runat="server" Text="Confirm" 
           OnClientClick="javascript:return confirm('Are you sure you want to send an email notification about the safety suggestion to the owner?')" 
           OnClick="btnSendStatus_Click" /> 

      <asp:Button ID="OKButton" runat="server" Text="Close" /> 
     </asp:Panel> 
     </ContentTemplate> 
     </asp:UpdatePanel>

代码隐藏：

protected void lnkSuggestionStatus_Click(object sender, EventArgs e) 
    { 
     LinkButton lnkSuggestionStatus = sender as LinkButton; 

//var safetySuggestionsId= 

     //get reference to the row selected 
     GridViewRow gvrow = (GridViewRow)lnkSuggestionStatus.NamingContainer; 


     //set the selected index to the selected row so that the selected row will be highlighted 
     GridView1.SelectedIndex = gvrow.RowIndex; 

     //show the modalPopUp 
     modalPopUpExtender1.Show(); 
    } 

public void btnSendStatus_Click(object sender, EventArgs e) { 
     var statusID = StatusList.SelectedValue; 

     string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True"; 
     //For updating the status of the safety suggestion 
     string updateCommand = "UPDATE SafetySuggestionsStatus SET ID= @statusID where [email protected]""; 
     using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      //using (SqlCommand cmd = new SqlCommand(cmdText, conn)) 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 

       cmd.Parameters.AddWithValue("@ID", statusID); 
       cmd.ExecuteNonQuery(); 
      } 
     } 

     SendSuggestionStatusToUser(statusID); 
    }

UPDATE：

当我调试的代码，我得到了以下错误：

SqlException was unhandled by user code 
Must declare the scalar variable "@SafetySuggestionsID"

更新2：

我修改了代码，如你所说：

protected void lnkSuggestionStatus_Click(object sender, EventArgs e) 
    { 
     LinkButton lnkSuggestionStatus = sender as LinkButton; 

     //var safetySuggestionsId = 

     //get reference to the row selected 
     GridViewRow gvrow = (GridViewRow)lnkSuggestionStatus.NamingContainer; 

     //set the selected index to the selected row so that the selected row will be highlighted 
     GridView1.SelectedIndex = gvrow.RowIndex; 

     HiddenField1.Value = gvrow.RowIndex.ToString(); 

     //show the modalPopUp 
     modalPopUpExtender1.Show(); 
    } 

    public void btnSendStatus_Click(object sender, EventArgs e) { 

     var statusID = StatusList.SelectedValue; 

     string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True"; 
     //For updating the status of the safety suggestion 
     string updateCommand = "UPDATE SafetySuggestionsLog SET StatusID= @statusID where [email protected]"; 
     using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 
       cmd.Parameters.AddWithValue("@ID", Convert.ToInt32(statusID)); 
       cmd.Parameters.AddWithValue("@SafetySuggestionsID", Convert.ToInt32(HiddenField1.Value)); 
       cmd.ExecuteNonQuery(); 
      } 
      //reset the value of hiddenfield 
      HiddenField1.Value = "-1"; 
     } 

     //SendSuggestionStatusToUser(statusID); 
    }

但是，当我调试代码时，我去了t以下错误：

我不知道为什么我得到这个错误，而我已经定义它。

更新3：

我加GridView1.DataBind()与所选建议的更新状态更新GridView控件，但它不和我一起工作。

public void btnSendStatus_Click(object sender, EventArgs e) { 

     var statusID = StatusList.SelectedValue; 

     string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True"; 
     //For updating the status of the safety suggestion 
     string updateCommand = "UPDATE SafetySuggestionsLog SET StatusID= @statusID where [email protected]"; 
     using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 
       cmd.Parameters.AddWithValue("@statusID", Convert.ToInt32(statusID)); 
       cmd.Parameters.AddWithValue("@SafetySuggestionsID", Convert.ToInt32(HiddenField1.Value)); 
       cmd.ExecuteNonQuery(); 
      } 
      //reset the value of hiddenfield 
      HiddenField1.Value = "-1"; 
     } 

     GridView1.DataBind(); 

     //SendSuggestionStatusToUser(statusID); 
    }

UPDATE 4： 添加以下，但它没有工作：

public void btnSendStatus_Click(object sender, EventArgs e) { 

     var statusID = StatusList.SelectedValue; 

     string connString = "Data Source=localhost\\sqlexpress;Initial Catalog=psspdbTest;Integrated Security=True"; 
     //For updating the status of the safety suggestion 
     string updateCommand = "UPDATE SafetySuggestionsLog SET StatusID= @statusID where [email protected]"; 
     using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 
       cmd.Parameters.AddWithValue("@statusID", Convert.ToInt32(statusID)); 
       cmd.Parameters.AddWithValue("@SafetySuggestionsID", Convert.ToInt32(HiddenField1.Value)); 
       cmd.ExecuteNonQuery(); 
      } 
      //reset the value of hiddenfield 
      HiddenField1.Value = "-1"; 
     } 

     UpdatePanel1.Update(); 
     GridView1.DataBind(); 


     //SendSuggestionStatusToUser(statusID); 
    }

来源

2012-07-03 user1395782

我没有看到任何地方SafetySuggestionsID定义... u必须把它定义为statusID

还当你添加参数，你是指ID ......请这些更正或更新您的代码查询。

string updateCommand = "UPDATE SafetySuggestionsStatus SET ID= @statusID"; // where?? 
     using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      //using (SqlCommand cmd = new SqlCommand(cmdText, conn)) 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 

       cmd.Parameters.AddWithValue("@statusID", statusID); 
       cmd.ExecuteNonQuery(); 
      } 
     }

更新：

"UPDATE SafetySuggestionsStatus SET ID= @statusID where [email protected]"";

您已经定义了2个参数，但你只是1在参数colleciton补充说：

cmd.Parameters.AddWithValue("@ID", statusID); // id should be statusID 
// also add @SafetySuggestionsID

更新2： 您lnkSuggestionStatus_Click事件处理程序，得到的第一列（ID）的值，并将它存储在类变量中，比如safeSuggestionsId。

然后在你的btnSendStatus_Click事件处理程序，你可以简单地添加：

using (SqlConnection conn = new SqlConnection(connString)) 
     { 
      conn.Open(); 
      //using (SqlCommand cmd = new SqlCommand(cmdText, conn)) 
      using (SqlCommand cmd = new SqlCommand(updateCommand, conn)) 
      { 

       cmd.Parameters.AddWithValue("@statusID ", statusID); 
       cmd.Parameters.AddWithValue("@SafetySuggestionsID", safetySuggestionsId); 
       cmd.ExecuteNonQuery(); 
      } 
     }

更新3： 希望下面的作品，这是未经测试...：

添加在你的模式弹出面板隐藏字段 - >
然后在lnkSuggestionStatus_Click事件处理程序中，添加：

hiddenRowIndex.Value = row.Cells [1]。文本; //修剪如有必要

然后当你保存在你的btnSendStatus_Click事件处理程序，你可以简单地添加：

 ... 
     ... 
     { 

      cmd.Parameters.AddWithValue("@statusID ", statusID); 
      cmd.Parameters.AddWithValue("@SafetySuggestionsID", 
             Convert.ToInt32(hiddenRowIndex.Value)); 
      cmd.ExecuteNonQuery(); 
     } 
     // reset hiddenRowIndex 
     hiddenRowIndex.Value = "-1"; 
    }

来源

2012-07-03 07:39:39 NoviceProgrammer

感谢您的通知。我修改了代码，但仍然没有得到我想要的。你能帮我一下吗？我觉得我有点困惑。 – user1395782

你可以更新现在发生的事情吗？如果你更新这个问题会更好，这样看到它的新人可以帮助 – NoviceProgrammer

我更新了它并感谢你的支持 – user1395782

看看这个样本项目

http://www.codeproject.com/Articles/17722/GridView-with-a-single-ModalPopupExtender-Panel-fo

http://mattberseth.com/blog/2007/07/modalpopupextender_example_for.html

http://thinkofdotnet.blogspot.com/2012/05/edit-update-gridview-with-ajax.html

来源

2012-07-03 06:41:55

嗨伙计，我的问题在这里之前，我搜索在网络上，我可以不能够解决这个问题。 – user1395782

最后，我知道如何解决它。我的问题是与我立即没有指定要指派给该行的DataKey其分配给选定行的索引HiddenField。

我只是需要在lnkSuggestionStatus_Click方法来修改此：

HiddenField1.Value = GridView1.DataKeys[gvrow.RowIndex].Value.ToString();

来源

2012-07-04 08:02:29 user1395782

如何使用Ajax ModalPopUpExtender控件更新GridView中的特定列？

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