如果也有DataTextValueField，asp.net dropdownlist不显示DataTextField

Question

I have a DataValueField and a DataTextField in my DropDownList . The data is from a DataSet and I want the dropdownlist to show the text field of my Dataset as preselected text. The Dataset is filled with data from a mysql table , containing " id " and " text ". The DropDownList code is:

<asp:DropDownList runat="server" DataValueField="id" 
DataTextField="text" ID="statusList" CssClass="viewItemRight" 
AutoPostBack="true"></asp:DropDownList>

If there is no DataValueField -Tag the DropDownList shows correctly the text-value from my DataSet as preselected text in my DropDownList . But if I add the DataValueField the DataTextField doesnt showing any preselected Text in the DropDownList .

The code for the data is:

//load statusList
            cmd = new MySqlCommand();
            cmd.CommandText = "SELECT * FROM statuslist WHERE active = '1' ORDER BY sorting ASC";
            cmd.Connection = con;
            sda = new MySqlDataAdapter(cmd);
            ds = new DataSet();
            sda.Fill(ds);
            statusList.DataSource = ds;
            statusList.DataBind();
            statusList.Items.Insert(0, " ");

How can I use both, the DataValueField and the DataTextField ?

Answer 1

Try something like this

Code:

DataTable dt = populatedd();
   statusList.DataSource = dt;
   statusList.DataTextField = "name";
   statusList.DataValueField = "id";
   statusList.DataBind();

    public DataTable populatedd()
    {
        string myQuery = "select id,name from yourtable order by name";
        SqlDataAdapter dap = new SqlDataAdapter(myQuery, con);
        DataSet ds = new DataSet();
        dap.Fill(ds);
        return ds.Tables[0];
    }

Markup

<asp:DropDownList runat="server" ID="statusList" CssClass="viewItemRight" 
AutoPostBack="true"></asp:DropDownList>