RadioButtonList、DropDownlist 在客端确认更改

来源：互联网发布：上海sql培训编辑：程序博客网时间：2024/04/28 17:41

RadioButtonList:

<asp:RadioButtonList id="rblMatrixType" style="Z-INDEX: 101; LEFT: 88px; POSITION: absolute; TOP: 104px"

 runat="server" Width="200px" AutoPostBack="True">

 <asp:ListItem Value="A" Selected="True">A</asp:ListItem>

 <asp:ListItem Value="B">B</asp:ListItem>

</asp:RadioButtonList>

<script>

 function attachNewEvent(ctlID)

  var ctl = document.all[ctlID];

  ctl.onclick = "";

  ctl.attachEvent("onclick", comfirmRBLChange);

 function comfirmRBLChange()

  if (confirm('Change the type will result in the loss of data. Are you sure you want to proceed?'))

   __doPostBack(event.srcElement.id, '');

  else

   document.all[rblSelectedItem].checked = "checked";

   return false;

</script>

protected override void OnPreRender(EventArgs e)

        System.Text.StringBuilder sb = new System.Text.StringBuilder();

        sb.Append("<script>" + System.Environment.NewLine);

        sb.Append(string.Format("       var rbl = /"{0}/";{1}", this.rblMatrixType.ClientID,System.Environment.NewLine));

        for (int index = 0; index < this.rblMatrixType.Items.Count; index++)

               sb.Append(string.Format("       attachNewEvent(rbl + /"_{0}/");{1}",index.ToString(),System.Environment.NewLine));

               if (this.rblMatrixType.Items[index].Selected)

                       sb.Append(string.Format("       var rblSelectedItem = /"{0}_{1}/";{2}",this.rblMatrixType.ClientID,index.ToString(),System.Environment.NewLine));

        sb.Append("</script>" + System.Environment.NewLine);

        if (!this.Page.IsStartupScriptRegistered("RadioButtonListChangeConfirm"))

               this.Page.RegisterStartupScript("RadioButtonListChangeConfirm", sb.ToString());

        base.OnPreRender (e);

DropDownList

<asp:DropDownList id="DropDownList1" style="Z-INDEX: 102; LEFT: 280px; POSITION: absolute; TOP: 280px"

 runat="server" Width="88px" AutoPostBack="True">

 <asp:ListItem Selected="True"></asp:ListItem>

 <asp:ListItem Value="A">A</asp:ListItem>

 <asp:ListItem Value="B">B</asp:ListItem>

 <asp:ListItem Value="C">C</asp:ListItem>

</asp:DropDownList>

<script>

 var ddlCtlID = "<%=this.DropDownList1.ClientID%>";

 function confirmChangeSelectItem(ctl,message)

  if (ctl[ctl.oldIndex].innerText == "")

   return true;

  if (!confirm(message))

   ctl.selectedIndex = ctl.oldIndex;

   return false;

  else

   return true;

</script>

protected override void OnPreRender(EventArgs e)

        this.DropDownList1.Attributes.Add("oldIndex", this.DropDownList1.SelectedIndex.ToString());

        this.DropDownList1.Attributes.Add("onchange","if (!confirmChangeSelectItem(this,'Change the size category combination will result in the loss of color prepack data. Are you sure you want to proceed?')) return;");

        base.OnPreRender (e);