Question

创建未在Gridview中更新其职位的用户列表。我希望列表中有一个下拉列表，其中包含所有可能的标题选择以及下拉列表旁边的按钮。然后一个人可以进入并在下拉按钮中更改标题，并将其更新并从列表中删除。

我所有这一切都是我希望它看起来的方式，但我想弄清楚如何将该行中下拉框的SelectedValue传递给OnClick后面的代码。正如您在下面看到的，我能得到的最接近的是在CommandArgument中传递行号。有关如何将特定行的下拉列表的SelectedValue提供给OnClick的任何建议吗？

编辑：也许我应该使用OnRowCommand而不是OnClick？

目前看起来像这样：

John Doe | DropdownList  Button
Jane Doe | DropdownList  Button
Joe Doe | DropdownList  Button
Jeff Doe |  DropdownList  Button

ASPX

<asp:GridView runat="server" ID="TitleView" OnRowDataBound="TitleView_RowDataBound" AutoGenerateColumns="False">
                <Columns>
                    <asp:BoundField DataField="Fullname" HeaderText="Fullname" />
                    <asp:TemplateField>
                        <ItemTemplate>
                            <div class="input-append"><asp:DropDownList CssClass="span5" ID="TitleList" runat="server">
                            </asp:DropDownList>
                                <asp:Button ID="lbnView" runat="server" Text="Update" CssClass="btn btn-primary" OnClick="btn_Clicked" 
                                            CommandArgument='<%# ((GridViewRow)Container).RowIndex %>'></asp:Button></div>
                        </ItemTemplate>
                    </asp:TemplateField>
                </Columns>
</asp:GridView>

背后的代码

public void bindTitleView()
    {
        using (SqlConnection conn = new SqlConnection(""))
        {
            SqlCommand cmd = new SqlCommand(@"SELECT U.First + ' ' + U.Last as Fullname, U.UserID, T.Name FROM Employees U LEFT JOIN Titles T ON U.Title = T.ID WHERE U.Active = '1' AND U.Title = '92' ORDER BY Fullname ASC", conn);
            conn.Open();
            SqlDataAdapter adp = new SqlDataAdapter(cmd);
            DataSet myDataSet = new DataSet();
            adp.Fill(myDataSet);
            TitleView.DataSource = myDataSet;
            TitleView.DataBind();
        }
    }
    protected void TitleView_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddl = (DropDownList)e.Row.FindControl("TitleList");
            using (SqlConnection conn = new SqlConnection(""))
            {
                SqlCommand cmd = new SqlCommand(@"SELECT ID, Name FROM Titles ORDER BY Name ASC", conn);
                conn.Open();
                SqlDataAdapter adp = new SqlDataAdapter(cmd);
                DataTable myDataSet = new DataTable();
                adp.Fill(myDataSet);
                ddl.DataSource = myDataSet;
                ddl.DataTextField = "Name";
                ddl.DataValueField = "ID";
                ddl.DataBind();
            }
        }
    }
    protected void btn_Clicked(object sender, EventArgs e)
    {
                String rowid = ((Button)sender).CommandArgument;
    }

解决方案：我添加后，我批准的答案为我工作了！IsPostBack到Page_Load

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bindTitleView();
        }

Answer 1

在你的btn_click中写下面的代码

protected void btn_Clicked(object sender, EventArgs e)
{

    Button Sample = sender as Button;
    GridViewRow row = Sample.NamingContainer as GridViewRow;
    DropDownList drp = row.FindControl("TitleList") as DropDownList;
    //Now use drp.SelectedValue
    }
}

如果这不是你想要的，请告诉我。

Answer 2

你可以这样做：

protected void btn_Clicked(object sender, EventArgs e)
{
    int line = ((GridViewRow)((Button)sender).Parent.Parent).RowIndex;
    DropDownList drp = ((DropDownList)TitleView.Rows[line].FindControl("TitleList"));
    //Continue the method
}

在Gridview中获取Dropdownlist的SelectedValue

2 个答案: