ASP.NET RequiredFieldValidator ValidationSummary 使用記錄

RequiredFieldValidator


  <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
                                ControlToValidate="TextBox1" ErrorMessage="請輸入日期"></asp:RequiredFieldValidator>

// 群組化， 可設定
ValidationGroup="gp01"

<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="存檔"
                                ValidationGroup="gp01" />

 <asp:TextBox ID="txtdate" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
                                ControlToValidate="txtdate" ErrorMessage="請輸入日期" ValidationGroup="gp01"></asp:RequiredFieldValidator>


// DropDownList ，用 InitialValue="0"來判斷

<asp:DropDownList
                    ID="DropDownList1" runat="server">
                    <asp:ListItem Value="0">請選擇...</asp:ListItem>
                    <asp:ListItem Value="0001">會議室1</asp:ListItem>
                    <asp:ListItem Value="0002">會議室2</asp:ListItem>
                </asp:DropDownList>
                <asp:RequiredFieldValidator ID="RequiredFieldValidator5" runat="server"
                    ControlToValidate="DropDownList1" ErrorMessage="請選擇會議室..." InitialValue="0"
                    ValidationGroup="gp02"></asp:RequiredFieldValidator>

Display="None" // 屬性 ，不顯示出來，要配合 ValidationSummary 使用

ValidationSummary

ShowMessageBox="True"    //屬性會變成彈跳訊息
ValidationGroup="group01" //屬性，設定群組
DisplayMode="List" //屬性，顯示方式，list會少了 - 符號
ShowSummary="False"  //屬性，是否在網頁上顯示訊息