多个列表框项目未被选中的问题 [英] Problem of multiple listbox item not getting selected

问题描述

你好，我在VS 2008工作，我有一些问题与listbox listitem

i有一个列表框如

hello, am working in VS 2008 and i have some issue issue with listbox listitem
i have taken one listbox like

<asp:ListBox ID="lstcity" runat="server" class="form-control" SelectionMode="Multiple"></asp:ListBox>

和以编程方式添加的项目就像

and programatically added items to it like

SqlConnection conn = new SqlConnection(c.connStr);
        string strQuery = "SELECT DistrictName,DistrictId FROM tbl_DistrictMaster";
        SqlCommand cmd = new SqlCommand(strQuery, conn);
        conn.Open();
        SqlDataReader dr = cmd.ExecuteReader();
        lstcity.Items.Clear();
        lstcity.DataSource = dr;
        lstcity.DataTextField = "DistrictName";
        lstcity.DataValueField = "DistrictId";
        lstcity.DataBind();

现在我想要选择的商品只显示

and now i want selected items only to show

string message = "";
                foreach (ListItem item in lstcity.Items)
                {
                    //sqll.Parameters.Clear();
                    //sqll.Parameters.AddWithValue("@City",  lstcity.Text);
                    if (item.Selected == true)
                    {
                        message += item.Text + ",";
                    }
                }

但即使它们在运行视图中显示也没有显示任何项目

请给我解决方案..

感谢adv



我尝试过：

but it is not showing any item selected even if they are displaying in run view
give me solution please..
thanks in adv

What I have tried:

string message = "";
               foreach (ListItem item in lstcity.Items)
               {
                   //sqll.Parameters.Clear();
                   //sqll.Parameters.AddWithValue("@City",  lstcity.Text);
                   if (item.Selected == true)
                   {
                       message += item.Text + ",";
                   }
               }

推荐答案

试试这个...

Hi,

Try this ...

string message = "";
foreach (var item in lstcity.SelectedItems)
{
    message += item.ToString()+ ",";
}

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