将变量从VB函数传递到客户端javascript

Question

您好我正在使用此Page.ClientScript.RegisterStartupScript（）从后面的vb代码调用javascript函数，这对我很好用我的问题是如何从后面的代码发送变量到javascript函数这里是我试过的至今 ：

  Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
   Handles Me.LoadComplete
    Dim Myname As String = "myName"
    Dim cstype As Type = Me.GetType()
    Page.ClientScript.RegisterStartupScript(cstype, "MyKey", "hello(Myname);",
  True)

End Sub 

javascript：

   <script type="text/javascript">
    function hello(name) {
        alert("hello world from javascript " + name)
    }
</script>

谢谢 ...

Answer 1

您必须使用正确的引用来传递字符串：

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
   Handles Me.LoadComplete
    Dim Myname As String = "myName"
    Dim cstype As Type = Me.GetType()
    Page.ClientScript.RegisterStartupScript(cstype, "MyKey", "hello('" & Myname & "');",
  True)

End Sub 

注意变量名称周围的单引号。

在客户端和服务器端代码之间双向传递数据的另一种方式是隐藏字段，例如

<asp:HiddenField ID="xhidMyname" runat="server" />

要么

<input type="hidden" id="xhidMyname" runat="server" />

客户端和服务器端都可以通过它的“value”属性访问该字段。

Answer 2

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
   Handles Me.LoadComplete
    Dim Myname As String = "myName"
    Dim cstype As Type = Me.GetType()
    Page.ClientScript.RegisterStartupScript(cstype, "MyKey", "hello('"&Myname&"');",
  True)

End Sub