DropDownList如何get到值
DropDownList list=(DropDownList)e.Item.FindControl("DropDownList");
OleDbDataAdapter da = new OleDbDataAdapter("Select StaffID from Staff",conn);
conn.Open();
DataSet ds=new DataSet();
da.Fill(ds,"Staff");
list.DataSource=ds.Tables["StaffID"];
list.DataTextField="StaffID";
list.DataBind();
conn.Close();
运行发现list.DataSource=ds.Tables["StaffID"];这句有错
原因是:Object reference not set to an instance of an object
如何解决阿,为这些小问题真是烦透了。