Javascript Function w/ webcontrol as a pramater

[Jon]

I would like to pass a reference of a webcontrol into a javascript
function. Below I have a snippet of code. "me.selectedVal ue" returns
undefined. I was hoping that would return the value that the user has
selected in the radio list..

ps: this is my first post, be gentle:)

**aspx page**

<form id="Form1" method="post" runat="server">
<asp:RadioButto nList ID=radio1 Runat=server >
<asp:ListItem Value=1 >Option 1</asp:ListItem>
<asp:ListItem Value=2 >Option 2</asp:ListItem>
<asp:ListItem Value=3 >Option 3</asp:ListItem>
</asp:RadioButton List>
</form>

**Code Behind**
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim strScript As String = "<script language=""Java Script"">" &
vbCrLf
strScript += " function test1(me) " & vbCrLf
strScript += "{alert(me.Sele ctedValue); " & vbCrLf
strScript += "}</script>"

If (Not Page.IsClientSc riptBlockRegist ered("clientScr ipt"))
Then
Page.RegisterCl ientScriptBlock ("clientScript" , strScript)
End If
End Sub

Private Sub Page_PreRender( ByVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.PreRende r
radio1.Attribut es.Add("onclick ", "test1(this )")
End Sub

[Rick Spiewak]

You have Me.Selected.Val ue inside quotes. You seem to be passing what you
would like to have as a variable as a string.

This might be clearer if you used a StringBuilder:

Imports System.Text
..
..
..

Dim sbldr As New StringBuilder
sbldr.Append("< script language=""Java Script"">") :
sbldr.Append(vb CrLf)
sbldr.Append(" function test1(me) ") : sbldr.Append(vb CrLf)
sbldr.AppendFor mat("{alert({0} ); {1}}</script>", Me.SelectedValu e,
vbCrLf)

"Jon" <jf***********@ hotmail.com> wrote in message
news:ef******** *************** ***@posting.goo gle.com...

I would like to pass a reference of a webcontrol into a javascript
function. Below I have a snippet of code. "me.selectedVal ue" returns
undefined. I was hoping that would return the value that the user has
selected in the radio list..

ps: this is my first post, be gentle:)

**aspx page**

<form id="Form1" method="post" runat="server">
<asp:RadioButto nList ID=radio1 Runat=server >
<asp:ListItem Value=1 >Option 1</asp:ListItem>
<asp:ListItem Value=2 >Option 2</asp:ListItem>
<asp:ListItem Value=3 >Option 3</asp:ListItem>
</asp:RadioButton List>
</form>

**Code Behind**
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load
Dim strScript As String = "<script language=""Java Script"">" &
vbCrLf
strScript += " function test1(me) " & vbCrLf
strScript += "{alert(me.Sele ctedValue); " & vbCrLf
strScript += "}</script>"

If (Not Page.IsClientSc riptBlockRegist ered("clientScr ipt"))
Then
Page.RegisterCl ientScriptBlock ("clientScript" , strScript)
End If
End Sub

Private Sub Page_PreRender( ByVal sender As Object, ByVal e As
System.EventArg s) Handles MyBase.PreRende r
radio1.Attribut es.Add("onclick ", "test1(this )")
End Sub

[Jon Turner]

Thank you for your quick response :)

I am currently working with VB. Is stringBuilder a C# object?

The javascript is now working. me.ID yields the objects ID and me.Value
yeilds the value for asp:TextBox and asp:DropDownLis t.

How do you get the selected values for the RadioButtonList and
CheckBoxList controls? Is there an easy way to do this or do you have
to do some wierd looping through the generated HTML table?

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[Peter]

You can retrieve selected values like this

String s = "Selected items:<br>"

for (int i=0; i < CheckBoxList1.I tems.Count; i++)

if ( CheckBoxList1.I tems[ i ].Selected )

// List the selected item
s = s + CheckBoxList1.I tems[i].Value
s = s + "<br>"
}

Label1my1.Text = s;

[Rick Spiewak]

Stringbuilder is a .NET object, you can use it in VB.NET.

"Jon Turner" <jf***********@ hotmail.com> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. ..

Thank you for your quick response :)

I am currently working with VB. Is stringBuilder a C# object?

The javascript is now working. me.ID yields the objects ID and me.Value
yeilds the value for asp:TextBox and asp:DropDownLis t.

How do you get the selected values for the RadioButtonList and
CheckBoxList controls? Is there an easy way to do this or do you have
to do some wierd looping through the generated HTML table?

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!

[Jon Turner]

Thank you Peter. I have tried your example, but can't seem to get it to
work. Below is a code snippet. I keep getting the error Message
"'check1.Items. Count' is null or not an object"

My goal is to get the sum total of the selected values. Then take that
number and perform a bitwise operation with another number. If returns
true - make a Div visible Else Hidden.
<script language="JavaS cript">
function test1()
{
for ( i=0; i < check1.Items.Co unt; i++)
{
if (check1.Items[i].Selected)
{
sValue = Svalue + check1.Items[i].Value;
}
}
alert(sValue);
}
</script>

*****

<asp:CheckBoxLi st ID=check1 Runat=server onclick="test1( );">
<asp:ListItem Selected=True Value=1>Option 1</asp:ListItem>
<asp:ListItem Value=2 >Option 2</asp:ListItem>
<asp:ListItem Value=4 >Option 3</asp:ListItem>
</asp:CheckBoxLis t>
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