Question

我有一个girdivew和一个SQLDataSource来将dataTable信息绑定到gridview。

如何在行更新事件中获取当前编辑行的某列的值。（来自dataTable）。

谢谢，

Answer 1

你试过什么？您是否只想从某个列获取数据？或代表整行的某个ID？如果是后者，您可以执行以下操作：

 protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
    int ID = Convert.ToInt16(GridView1.SelectedDataKey.Value);

}

您必须在gridview中声明数据密钥名称，如下所示：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
    DataKeyNames="id" DataSourceID="SqlDataSource1" 
    onselectedindexchanged="GridView1_SelectedIndexChanged">

用户评论后

编辑：

如果您想要特定列中的特定值，则可以执行此操作：

<asp:GridView ID="GridView1" runat="server" OnRowDataBound="handler" 
        AutoGenerateColumns="False" DataSourceID="SqlDataSource1" 
        DataKeyNames="id"  OnRowCommand="RowCommandHandler">

将onRowCommand添加到gridview，然后添加到代码隐藏中：

 protected void RowCommandHandler(Object sender, GridViewCommandEventArgs e)
 {
  int index = Convert.ToInt32(e.CommandArgument);
  GridViewRow row = GridView1.Rows[index];
   int k = row.RowIndex;
   string text = row.Cells[1].Text;
 }

您获取所选行的索引，然后获取该索引并将其传递给GridView1.Rows，然后您拥有所选行，然后您可以从所需的任何列获取数据。

 string text = row.Cells[1].Text;

如果你需要文本的列是第4列，你只需将Cells [1]更改为Cells [4]等。

Answer 2

在下面的示例中，我在网格中显示数据，然后允许用户异步激活或停用注释。我正在使用UPDATE PANEL来异步激活它。

您需要同时使用rowDataBound和RowCommand事件来实现此

通过这种方式，你可以获得行的id和dow你想要对该行做什么编辑，删除或做我在这个例子中做的事情我更新一个列

    <asp:GridView ID="gvSHowMostViewedArticles"  runat="server" AllowPaging="True" 
         AutoGenerateColumns="False"  Width="920px" BackColor="White" 
         BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="4" 
         Font-Names="Verdana" Font-Size="X-Small" ForeColor="Black" 
         GridLines="Horizontal" PageSize="10"   onrowdatabound="gvSHowMostViewedArticles_RowDataBound" 
onrowcommand="gvSHowMostViewedArticles_RowCommand" onpageindexchanging="gvSHowMostViewedArticles_PageIndexChanging">

         <Columns>
          <asp:TemplateField HeaderText="Sno">
                <ItemTemplate>
                  <%# Container.DataItemIndex + 1 %>
               </ItemTemplate>
          </asp:TemplateField>
   <asp:BoundField DataField="ArticleTitle" HeaderText="Article Title" />
   <asp:BoundField DataField="FullName" HeaderText="Name" />
   <asp:BoundField DataField="Country" HeaderText="Country" />

<asp:TemplateField HeaderText="Message">
       <ItemTemplate>
           <asp:LinkButton ID="lnkBtnShowMessage" runat="server" Text="Read" CommandName="showMessage" CommandArgument='<%# Eval("ID") %>' />
                                                </ItemTemplate>
                                         </asp:TemplateField>
                                        <asp:TemplateField HeaderText="Activate">
                                                <ItemTemplate>
                                                    <asp:LinkButton ID="lnkBtnActivateComment" runat="server" Text="Activate" CommandName="ActivateComment" CommandArgument='<%# Eval("ID") %>' />
                                                </ItemTemplate>
                                         </asp:TemplateField>
                                        <asp:TemplateField HeaderText="De Activate">
                                                <ItemTemplate>
                                                    <asp:LinkButton ID="lnkBtnDeActivateComment" runat="server" Text="De-Activate" CommandName="DeActivateComment" CommandArgument='<%# Eval("ID") %>' />
                                                </ItemTemplate>
                                         </asp:TemplateField>

        protected void gvSHowMostViewedArticles_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            //Show Message
            LinkButton lb = e.Row.FindControl("lnkBtnShowMessage") as LinkButton;
            if (lb != null)
                ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(lb);


            //Activate
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                LinkButton lbActivate = e.Row.FindControl("lnkBtnActivateComment") as LinkButton;
                if (lbActivate != null)
                    ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(lbActivate);

                lbActivate.Attributes.Add("onclick", "javascript:return " +
                "confirm('Are you sure you want to Activate this comment " +
                DataBinder.Eval(e.Row.DataItem, "ID") + "')");
            }
            //De Activate
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                LinkButton lbActivate = e.Row.FindControl("lnkBtnDeActivateComment") as LinkButton;
                if (lbActivate != null)
                    ScriptManager.GetCurrent(this).RegisterAsyncPostBackControl(lbActivate);

                lbActivate.Attributes.Add("onclick", "javascript:return " +
                "confirm('Are you sure you want to De-Activate this comment " +
                DataBinder.Eval(e.Row.DataItem, "ID") + "')");
            }
        }


      protected void gvSHowMostViewedArticles_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            //Show Message
            if (e.CommandName == "showMessage")
            {
                int sno = Convert.ToInt32(e.CommandArgument);
                string strSql = "SELECT * FROM Comments WHERE comID = " + sno;
                DataSet ds = DataProvider.Connect_Select(strSql);
                lblCommentMessage.Text = ds.Tables[0].Rows[0]["comMessage"].ToString();
            }

            // Activate Comment
            if (e.CommandName == "ActivateComment")
            {
                int sno = Convert.ToInt32(e.CommandArgument);
                String strSql = "UPDATE Comments SET Visible = 1 WHERE ID = " + sno;
                DataProvider.Connect_Select(strSql);
                lblCommentMessage.Text = "Activated";
            }

            // De Activate Comment
            if (e.CommandName == "DeActivateComment")
            {
                int sno = Convert.ToInt32(e.CommandArgument);
                String strSql = "UPDATE Comments SET Visible = 0 WHERE ID = " + sno;
                DataProvider.Connect_Select(strSql);

                lblCommentMessage.Text = "Deactivate";

            }
        }

如何从gridview的dataTable获取价值？

2 个答案: