设置默认值:DropDownList1.Items[i].Selected=true;
绑定:
DropDownList1.DataSource = dataSet.Tables["Table1"].DefaultView;
绑定:
DropDownList1.DataSource = dataSet.Tables["Table1"].DefaultView;
//指定DropDownList使用的表里的那些字段
DropDownList1.DataTextField = "ItemName"; //dropdownlist的Text的字段
DropDownList1.DataValueField = "id";//dropdownlist的Value的字段
DropDownList1.DataBind();
取选择项:
DropDownList1.SelectedItem.Value()不要()
OracleCommand myCommand11 = new OracleCommand("select jh,cw,scts,ny,bj from dba04 where jh="+DropDownList1.SelectedItem.Value, myConnection);
加个空选项
this.DropDownList1.Items.Insert(0,new ListItem("请选择",""));
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