Question

我有一个GridView，它使用实体框架从LINQ查询中获取数据。现在，我希望能够单击一行来填充位于gridview旁边的updatepanel，其中包含所单击行上对象的属性。

现在这就是我到目前为止：

    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" AllowPaging="True" AllowSorting="True" OnRowDataBound="GridView1_RowDataBound">
                    <Columns>
                        <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" />
                        <asp:BoundField DataField="Payment" HeaderText="Payment" SortExpression="Payment" />
                        <asp:BoundField DataField="Creator" HeaderText="Creator" SortExpression="Creator" />
                        <asp:BoundField DataField="JobId" HeaderText="JobId" SortExpression="JobId" />
                    </Columns>
[...]
                </asp:GridView>
            </div>
            <div class="center">
                <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="True">
                </asp:ScriptManager>
                <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
                    <ContentTemplate>
                        <div class="wrapper">
                            <div class="ProfileTop">
                                <asp:Label ID="JobTitle" runat="server" Text=""></asp:Label>
                            </div>
                            <div class="left">
                                <asp:Label ID="JobDescription" runat="server" Text=""></asp:Label>
                            </div>
                            <div class="right">
                                <asp:Label ID="JobCreator" runat="server" Text=""></asp:Label>
                            </div>

                        </div>
                    </ContentTemplate>
                    <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="GridView1" EventName="SelectedIndexChanged" />
                    </Triggers>
                </asp:UpdatePanel>

现在背后的代码如下：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        int theJobId = (int)DataBinder.Eval(e.Row.DataItem, "JobId");
        Session["JobToShow"] = theJobId;

        e.Row.Attributes.Add("onclick",
Page.ClientScript.GetPostBackEventReference(GridView1, "Select$" + e.Row.RowIndex.ToString()));

        e.Row.Style["cursor"] = "pointer";
    }
}

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{

    int c = (int)Session["JobToShow"];
    var currentJob = JobDataFactory.RetrieveJob(c);

    JobTitle.Text = currentJob.Title;
    JobDescription.Text = currentJob.Descripton;
}

我尝试了几种不同的方法，但没有运气。我可以单击gridview行，并触发updatepanel以使用新数据进行更新。但遗憾的是，它不是点击行的属性，而是来自最新创建的行。所以我的问题是如何捕获已被点击的行，因此我可以使用它来更新更新面板中的正确信息。

修改

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
    var row = GridView1.SelectedRow;
    int c = Convert.ToInt32(row.Cells[3].Text); 
    var currentJob = JobDataFactory.RetrieveJob(c);

来自speti43的代码完成了这个技巧，只需转换而不是强制转换。

Answer 1

不需要在Session中存储它。

您可以将GridViewSelectEventArgs用于SelectedIndexChanging事件：

protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
    var row = GridView1.Rows[e.NewSelectedIndex];
    int c = (int)row.Cells[x].Text ; //x is the number of appropriate column 
    var currentJob = JobDataFactory.RetrieveJob(c);

或

protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
{
    var row = CustomersGridView.SelectedRow;
    int c = (int)row.Cells[x].Text ; //x is the number of appropriate column 
    var currentJob = JobDataFactory.RetrieveJob(c);

如何单击GridView行以使用行中的数据填充更新面板？

1 个答案: