DropDownList控件

Posted 2022-02-08 xqfk

 

前台

<asp:DropDownList runat="server" ID="aa"></asp:DropDownList>

后台

public void Bind1()

aa.DataSource = s1.select("SELECT ID,name FROM 表 ");
aa.DataTextField = "name";
aa.DataValueField = "ID";
aa.DataBind();
aa.Items.Insert(0, new ListItem("--请选择--", "0"));

 

获取值

if (aa.SelectedValue != "" && aa.SelectedValue != "0")

string a= aa.SelectedValue;