GridView分页,无法获取正确的Datakey值

时间:2010-08-05 09:14:56

标签: asp.net gridview paging datakey

GridView的

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
    AllowSorting="True" PagerSettings-Position="TopAndBottom"
    PagerSettings-Mode="Numeric" PageSize="40" CellPadding="4" DataSourceID="dsEquipmentGridView"
    ForeColor="#333333" GridLines="Horizontal" Style="font-size: x-small" AutoGenerateColumns="False"
    DataKeyNames="IREF" OnRowEditing="GridView1_RowEditing" OnRowUpdated="GridView1_RowUpdated"
    OnSorted="GridView1_Sorted" OnSorting="GridView1_Sorting" OnPageIndexChanged="GridView1_PageIndexChanged1"
    OnPageIndexChanging="GridView1_PageIndexChanging" OnSelectedIndexChanged="GridView1_SelectedIndexChanged"
    OnSelectedIndexChanging="GridView1_SelectedIndexChanging" OnRowCommand="GridView1_RowCommand"
    BorderColor="Black" BorderStyle="Solid" BorderWidth="1px" 
    OnRowCancelingEdit="GridView1_RowCancelingEdit" onload="GridView1_Load" 
    ondatabound="GridView1_DataBound">
    <PagerSettings Position="TopAndBottom" />
    <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
    <Columns>
 <asp:CommandField ShowDeleteButton="False" ShowSelectButton="true" EditText="QuickEdit"
     HeaderText="Manage" SelectText="Manage" />

对于加载的第一个页面,如果单击命令字段,它将显示正确的DataKey值。

但是,如果我更改为结果的下一页,则在选择记录时,相应的值不正确。它似乎保留了上一页的信息。我该如何克服这个问题?

编辑:

在GridView1_SelectedIndexChanged方法中,我使用了以下内容:

    // Determine the index of the selected row.
    int index = GridView1.SelectedIndex;

    // Display the primary key value of the selected row.
    HttpContext.Current.Response.Write("The primary key value of the selected row is " + GridView1.DataKeys[index].Value.ToString() + ".<br>");

    GridViewRow row = GridView1.Rows[index];

    int rowindex = row.RowIndex;
    HttpContext.Current.Response.Write("rowindex-> " + rowindex.ToString() + "<br>");

    int ID = (int)GridView1.DataKeys[row.DataItemIndex - (GridView1.PageIndex * GridView1.PageSize)].Value;

    HttpContext.Current.Response.Write("row.DataItemIndex" + ID.ToString()+"<br>");

    int Userid = Convert.ToInt32(GridView1.DataKeys[index].Value);

    HttpContext.Current.Response.Write("Userid" + Userid.ToString() + "<br>");

分页后我无法获得正确的值。

3 个答案:

答案 0 :(得分:2)

使用分页时,我们可以获得确切的行索引(在gridview中从0到totalrows计算) 并且在获取datakey时,我们需要传递当前页面的行索引。

使用下面的行获取当前页面索引并获取datakey:

// Get the correct row index since there is paging
int idx = gridViewRow.DataItemIndex - TestGridView.PageIndex * TestGridView.PageSize;

答案 1 :(得分:1)

我可能会迟到。 但对于其他人,我回答这个问题。

“在使用DataKey数组之前再次重新绑定gridview”

它对我有用。 希望它也适用于其他人。

答案 2 :(得分:0)

前一段时间修复过。正在使用第三方GridViewhelper类。这破坏了GridView的正常功能。