如何在asp.net中的模式彈出窗口中創建一個錯誤模式彈出窗口

Question

我正在開發一個網站，我希望訪問該網站的人們添加他們的評論。

我所做的是，我保留了一個添加按鈕，當用戶點擊該按鈕時，會彈出一個添加注釋的彈出窗口。 現在，用戶不應該將該字段留空。 所以我正在后面的代碼中進行必要的驗證，現在我想在用戶嘗試添加注釋而不進入其中一個字段時顯示模態彈出錯誤消息。 如何顯示錯誤消息然后返回到彈出的注釋模式..

我提出的代碼如下......

<asp:Button ID="addComment" runat="server" Text="Add Your Comment" OnClick="addComment_Click" style="margin-top:10px;" Height="30px" ToolTip="Add Your comment about us" Font-Bold="True" />

<asp:scriptmanager id="ScriptManager1" runat="server"></asp:scriptmanager>
<ajaxtoolkit:modalpopupextender id="ModalPopupExtender1" runat="server" cancelcontrolid="btnCancel" targetcontrolid="addComment" popupcontrolid="Panel1" popupdraghandlecontrolid="PopupHeader" drag="false" backgroundcssclass="ModalPopupBG"></ajaxtoolkit:modalpopupextender>
<asp:panel id="Panel1" style="display: none" runat="server">
  <div class="HellowWorldPopup">
    <div class="PopupHeader" id="PopupHeader">
      <h3 style="color:white; font-family:'Palatino Linotype'">Add Your Comment</h3>
    </div>
    <div class="PopupBody">
      <p style="font-family:'Palatino Linotype'; margin-left:10px;">Your Name :</p>
      <p>
        <asp:TextBox ID="txtName" Text="" runat="server" Width="300px" style="margin-left:10px; font-family:'Palatino Linotype'; font-size:medium; font-style:italic"></asp:TextBox>
      </p>

      <p style="font-family:'Palatino Linotype'; margin-left:10px;">Your Comment:</p>
      <p>
        <asp:TextBox ID="txtComment" Text="" runat="server" Width="400px" style="margin-left:10px;font-family:'Palatino Linotype'; max-height:100px; font-size:medium; resize:none; font-style:italic" TextMode="MultiLine"></asp:TextBox>
      </p>

    </div>

    <asp:Button runat="server" id="btnOkay" Text="Done" OnClick="btnOkay_Click" style="font-family:'Palatino Linotype'; margin-bottom:10px; margin-left:10px;  width:100px; height:30px; font-size:small;font-weight:700" />
    <asp:Button ID="btnCancel" runat="server" Text="Cancel" style="font-family:'Palatino Linotype';width:100px; height:30px; margin-left:10px; font-size:small;font-weight:700" OnClick="btnCancel_Click" />

  </div>

</asp:panel>

請幫我..

提前致謝

Answer 1

我找到了解決這個問題的方法：

修改后的代碼如下：

<asp:Button ID="addComment" runat="server" Text="Add Your Comment" OnClick="addComment_Click" style="margin-top:10px;" Height="30px" ToolTip="Add Your comment about us" Font-Bold="True" CausesValidation="false" />

<asp:scriptmanager id="ScriptManager1" runat="server"></asp:scriptmanager>
<ajaxtoolkit:modalpopupextender id="ModalPopupExtender1" runat="server" cancelcontrolid="btnCancel" targetcontrolid="addComment" popupcontrolid="Panel1" popupdraghandlecontrolid="PopupHeader" drag="false" backgroundcssclass="ModalPopupBG"
oncancelscript="ClearUI();" behaviorid="modalwithinput"></ajaxtoolkit:modalpopupextender>
<asp:panel id="Panel1" style="display: none" runat="server">
  <div class="HellowWorldPopup">
    <div class="PopupHeader" id="PopupHeader">
      <h3 style="color:white; font-family:'Palatino Linotype'">Add Your Comment</h3>
    </div>
    <div class="PopupBody">
      <p style="font-family:'Palatino Linotype'; margin-left:10px;">Your Name :</p>
      <p>
        <asp:TextBox ID="txtName" Text="" runat="server" Width="300px" style="margin-left:10px; font-family:'Palatino Linotype'; font-size:medium; font-style:italic"></asp:TextBox>
        <asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" controltovalidate="txtName" errormessage="Please Enter your name" setfocusonerror="true" display="None"></asp:requiredfieldvalidator>
        <ajaxtoolkit:validatorcalloutextender id="RequiredFieldValidator1_ValidatorCalloutExtender" runat="server" targetcontrolid="RequiredFieldValidator1" behaviorid="textValidator" enabled="True">
        </ajaxtoolkit:validatorcalloutextender>
      </p>

      <p style="font-family:'Palatino Linotype'; margin-left:10px;">Your Comment:</p>
      <p>
        <asp:TextBox ID="txtComment" Text="" runat="server" Width="400px" style="margin-left:10px;font-family:'Palatino Linotype'; max-height:100px; font-size:medium; resize:none; font-style:italic" TextMode="MultiLine"></asp:TextBox>
        <asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server" controltovalidate="txtComment" errormessage="Please Enter the Comment" setfocusonerror="true" display="None">
        </asp:requiredfieldvalidator>
        <ajaxtoolkit:validatorcalloutextender id="Validatorcalloutextender1" runat="server" targetcontrolid="RequiredFieldValidator2" behaviorid="textValidator1" enabled="True">
        </ajaxtoolkit:validatorcalloutextender>
      </p>

    </div>

    <asp:Button runat="server" id="btnOkay" Text="Done" OnClick="btnOkay_Click" style="font-family:'Palatino Linotype'; margin-bottom:10px; margin-left:10px;  width:100px; height:30px; font-size:small;font-weight:700" />
    <asp:Button ID="btnCancel" runat="server" Text="Cancel" style="font-family:'Palatino Linotype';width:100px; height:30px; margin-left:10px; font-size:small;font-weight:700" OnClick="btnCancel_Click" />

  </div>

</asp:panel>

資源