这就是我的模态弹出窗口的样子
<asp:TextBox ID="txtPatientID" AutoCompleteType="Disabled" runat="server" CssClass="csstextbox" Width="350px"></asp:TextBox>
<asp:Button ID="btnCheckPatientID" CssClass="cssbutton" runat="server" Text="Check" />
<asp:ModalPopupExtender ID="btnCheckPatientID_ModalPopupExtender" runat="server"
PopupControlID="panelCheckPatient" TargetControlID="btnCheckPatientID" BackgroundCssClass="modalbackground">
</asp:ModalPopupExtender>
<div class="modalpopup" id="panelCheckPatient" style="display: none">
<iframe id="iframeCheckPatient" runat="server" width="485px" src="Check_Patient.aspx"
height="485px" scrolling="auto"></iframe>
</div>
在单击 btnCheckPatientID 时,我必须将 txtPatientID.Text 作为查询字符串传递给 Modalpopup(在 modalpopup 中加载 iframe)我该怎么做?