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i am new to ajax
i have a registartion form with 2 buttons. button1 is in updatepanel with a textbox and button2(submit) is outside updatepanel.
i want button2 diabled on page load and depending on the true / flase condition on button1 click i want button2 to be enabled.
how to achieve it
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 | Thanks 
hido2628 | 0:22 27 Aug '08 |
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My client still use framework 1.1 and the web solutions are for net 2 or 3. I need this urgent. thanks a lot, i really aprecite this.
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I am developing a new server control - CommandClickOnce button based on ClickOnce button.
I am Creating credit card information in c# asp.net in 2003.
I want to ClickOnceButton.dll(Commandbutton) code in c#
Pls give me a CommandButton ClickOnceButton Server Control code.
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I wanted to use this in an UpdatePanel with an UpdateProgress control but the UpdateProgress control doesnt seem to show after clicking the ClickOnceButton. Is it cause it's not inheriting from the Button control? I created a click once image button that inherited from the ImageButton contral it triggered the UpdateProgress control.
Any ideas? It would be nice if there was already an Ajax control that did this, wouldnt it?  
Iggy
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Does ClickOnceButton able to support same ValidationGroup functionality as found in standard Button control?
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I tink that is alot for work for the simple task you want to achieve. You could have simple made the button invisible and make another button that is disabled visible. But make sure that the new button is in the exact place as the old one, which would only take one line of code.
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Hi everyone:
I just wanted to ask: what about the "if (typeof(Page_ClientValidate) != 'function' || Page_ClientValidate()){" client script sentences in ASP NET 2.0? is the "Page_ClientValidate" still used? will this work on 2.0?
jportelas
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This control was exactly what I needed. I had to tweak it slightly to make it work in ASP.NET 2.0 (mainly to remove a couple of references to the deprecated functions or conventions Mybase.page.RegisterHiddenField and Me.OnceClickBtnName).
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Wow, people still read this article? Glad you found it useful I've been meaning to release an updated version, just can never seem to find the time.
~Eric
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I have developed a new server control - PromptClickOnce button based on ClickOnce button. Besides the features of validation and ClickOnce, it integrates a new feature: prompt a confirmation dialog box. When it is clicked, it first validates the page, then popup a dialog to ask user's confirmation before performing ClickOnce. If you need this button, simply add it to ClickOnceButton project, and build new ClickOnceButton assemly. After you add the new assemly to your .NET toolbox, you will see this new server control. Have fun to play with it!
Imports System.ComponentModel
Imports System.Web.UI
Imports System.Drawing
<ToolboxBitmap(GetType(System.Web.UI.WebControls.Button)), DefaultEvent("Click")> _
Public Class PromptClickOnceButton
Inherits System.Web.UI.WebControls.WebControl
Implements IPostBackEventHandler
Public Event Click As EventHandler
Public Event Command As System.Web.UI.WebControls.CommandEventHandler
Private Const OnceClickBtnName As String = "__onceClickBtn"
<Browsable(True), Category("Behavior")> _
Public Property DisableAfterClick() As Boolean
Get
Dim o As Object = MyBase.ViewState("DisableAfterClick")
Return IIf(IsNothing(o), False, CBool(o))
End Get
Set(ByVal Value As Boolean)
MyBase.ViewState("DisableAfterClick") = Value
End Set
End Property
<Browsable(True), Category("Behavior")> _
Public Property CommandName() As String
Get
Dim o As Object = MyBase.ViewState("CommandName")
Return IIf(IsNothing(o), String.Empty, CStr(o))
End Get
Set(ByVal Value As String)
MyBase.ViewState("CommandName") = Value
End Set
End Property
<Browsable(True), Category("Behavior")> _
Public Property CommandArgument() As String
Get
Dim o As Object = MyBase.ViewState("CommandArgument")
Return IIf(IsNothing(o), String.Empty, CStr(o))
End Get
Set(ByVal Value As String)
MyBase.ViewState("CommandArgument") = Value
End Set
End Property
<Browsable(True), Category("Appearance")> _
Public Property DisabledText() As String
Get
Dim o As Object = MyBase.ViewState("DisabledText")
Return IIf(IsNothing(o), String.Empty, CStr(o))
End Get
Set(ByVal Value As String)
MyBase.ViewState("DisabledText") = Value
End Set
End Property
<Browsable(True), Category("Appearance")> _
Public Property Text() As String
Get
Dim o As Object = MyBase.ViewState("Text")
Return IIf(IsNothing(o), "Button", CStr(o))
End Get
Set(ByVal Value As String)
MyBase.ViewState("Text") = Value
End Set
End Property
<Browsable(True), Category("Behavior")> _
Public Property CausesValidation() As Boolean
Get
Dim o As Object = MyBase.ViewState("CausesValidation")
Return IIf(IsNothing(o), True, CBool(o))
End Get
Set(ByVal Value As Boolean)
MyBase.ViewState("CausesValidation") = Value
End Set
End Property
<Browsable(True), Category("Behavior")> _
Public Property ConfirmBeforeSubmit() As Boolean
Get
Dim o As Object = MyBase.ViewState("ConfirmBeforeSubmit")
Return IIf(IsNothing(o), True, CBool(o))
End Get
Set(ByVal Value As Boolean)
MyBase.ViewState("ConfirmBeforeSubmit") = Value
End Set
End Property
<Browsable(True), Category("Appearance")> _
Public Property ConfirmationMessage() As String
Get
Dim o As Object = MyBase.ViewState("ConfirmationMessage")
Return IIf(IsNothing(o), String.Empty, CStr(o))
End Get
Set(ByVal Value As String)
MyBase.ViewState("ConfirmationMessage") = Value
End Set
End Property
Public Sub New()
MyBase.New(HtmlTextWriterTag.Input)
End Sub
<Browsable(False)> _
Friend ReadOnly Property GetClientValidate() As String
Get
Return "if (typeof(Page_ClientValidate) == 'function') Page_ClientValidate(); "
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetClickOnceClientValidate() As String
Get
Return "if (typeof(Page_ClientValidate) == 'function') { if(Page_ClientValidate()) { " + _
GetClickOnceJavascript + " }} else { " + _
GetClickOnceJavascript + " }"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetClickOnceJavascript() As String
Get
Return "document.getElementsByName('" + Me.OnceClickBtnName + "').item(0).setAttribute('name'," + _
"this.getAttribute('name')); this.disabled = true; " + _
IIf(DisabledText = String.Empty, String.Empty, "this.value = '" + DisabledText + "';") + _
"this.form.submit();"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirmJavascript() As String
Get
Return "return confirm('" + EscapedMessage(ConfirmationMessage) + "');"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirm() As String
Get
Return "confirm('" + EscapedMessage(ConfirmationMessage) + "')"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirmReturn() As String
Get
Return "if (confirm('" + EscapedMessage(ConfirmationMessage) + "')) " + _
"{ return true;} else {return false;} "
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirmClientValidate() As String
Get
Return "if (typeof(Page_ClientValidate) == 'function') { if(Page_ClientValidate()) { " + _
GetConfirmReturn + " }} else { " + _
GetConfirmReturn + " }"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirmClickOnce() As String
Get
Return " if( " + GetConfirm + ") { " + _
GetClickOnceJavascript + " } else {return false;}"
End Get
End Property
<Browsable(False)> _
Friend ReadOnly Property GetConfirmClickOnceClientValidate() As String
Get
Return "if (typeof(Page_ClientValidate) == 'function') { if(Page_ClientValidate()) { " + _
GetConfirmClickOnce + " }} else { " + _
GetConfirmClickOnce + " }"
End Get
End Property
Protected Overrides Sub RenderContents(ByVal writer As HtmlTextWriter)
End Sub
Protected Overrides Sub AddAttributesToRender(ByVal writer As HtmlTextWriter)
Dim strOnClick As String
If IsNothing(MyBase.Page) Then
MyBase.Page.VerifyRenderingInServerForm(Me)
End If
writer.AddAttribute(HtmlTextWriterAttribute.Type, "submit")
writer.AddAttribute(HtmlTextWriterAttribute.Name, MyBase.UniqueID)
writer.AddAttribute(HtmlTextWriterAttribute.Value, Me.Text)
If Not IsNothing(MyBase.Page) And Me.CausesValidation And MyBase.Page.Validators.Count > 0 Then
If Me.DisableAfterClick Then
If Me.ConfirmBeforeSubmit Then
strOnClick = Me.GetConfirmClickOnceClientValidate
Else
strOnClick = Me.GetClickOnceClientValidate
End If
Else
If Me.ConfirmBeforeSubmit Then
strOnClick = Me.GetConfirmClientValidate
Else
strOnClick = Me.GetClientValidate
End If
End If
If MyBase.Attributes.Count > 0 And Not IsNothing(MyBase.Attributes("onclick")) Then
strOnClick = String.Concat(MyBase.Attributes("onclick"), strOnClick)
MyBase.Attributes.Remove("onclick")
End If
writer.AddAttribute("language", "javascript")
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, strOnClick)
ElseIf Me.DisableAfterClick Or Me.ConfirmBeforeSubmit Then
If Me.DisableAfterClick Then
If Me.ConfirmBeforeSubmit Then
strOnClick = Me.GetConfirmClickOnce
Else
strOnClick = Me.GetClickOnceJavascript
End If
Else
If Me.ConfirmBeforeSubmit Then
strOnClick = Me.GetConfirmJavascript
End If
End If
If MyBase.Attributes.Count > 0 And Not IsNothing(MyBase.Attributes("onclick")) Then
strOnClick = String.Concat(MyBase.Attributes("onclick"), strOnClick)
MyBase.Attributes.Remove("onclick")
End If
writer.AddAttribute("language", "javascript")
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, strOnClick)
End If
MyBase.AddAttributesToRender(writer)
End Sub
Protected Overrides Sub OnInit(ByVal e As EventArgs)
If Me.DisableAfterClick And Not Me.IsHiddenFieldRegistered Then
MyBase.Page.RegisterHiddenField(Me.OnceClickBtnName, "")
End If
MyBase.OnInit(e)
End Sub
Private Function IsHiddenFieldRegistered() As Boolean
For Each ctl As Control In MyBase.Page.Controls
If TypeOf ctl Is HtmlControls.HtmlInputHidden Then
If ctl.ID = Me.OnceClickBtnName Then
Return True
End If
End If
Next
Return False
End Function
Protected Overridable Sub OnClick(ByVal e As EventArgs)
RaiseEvent Click(Me, e)
End Sub
Protected Overridable Sub OnCommand(ByVal e As System.Web.UI.WebControls.CommandEventArgs)
RaiseEvent Command(Me, e)
End Sub
Private Sub RaisePostBackEvent(ByVal eventArgument As String) Implements System.Web.UI.IPostBackEventHandler.RaisePostBackEvent
If Me.CausesValidation Then
MyBase.Page.Validate()
End If
Me.OnClick(New EventArgs)
Me.OnCommand(New System.Web.UI.WebControls.CommandEventArgs(Me.CommandName, Me.CommandArgument))
End Sub
Private Function EscapedMessage(ByVal strMsg As String) As String
Return Replace(ConfirmationMessage, "'", "\'")
End Function
End Class
-- modified at 10:49 Tuesday 2nd May, 2006
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Hi,
Have u ever tested with asp.net/c#. I have tried to use your dll but it does not work with c# application, whereas it works fine with vb application.
Please solve this issue.
Compiler Error Message: CS0234: The type or namespace name 'ClickOnceButton' does not exist in the class or namespace 'ClickOnceButton.ClickOnceButton' (are you missing an assembly reference?)
-- modified at 1:55 Tuesday 2nd May, 2006
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Hi Anjum Rizwi,
Simply add namespace to the vb class, like following:
Namespace ClickOnceButton
<ToolboxData("<{0}:PromptClickOnceButton runat=""server"" />"), ToolboxBitmap(GetType(System.Web.UI.WebControls.Button)), DefaultEvent("Click")> _
Public Class PromptClickOnceButton
Inherits System.Web.UI.WebControls.WebControl
Implements IPostBackEventHandler
.....
End Class
End Namespace
The namespace name have to be different with the class name. Complile it, and then you could use the new dll in your C# project. I have tested it in a C# web application. It works fine.
By the way, I added a new feature to this PromptClickOnce button. The idea is from Mika. All buttons become disabled on the web form when one button is clicked. Only one property's code (GetClickOnceJavascript) is changed.
<Browsable(False)> _
Friend ReadOnly Property GetClickOnceJavascript() As String
Get
Dim sb As New StringBuilder
sb.Append("for(var f=0; f < document.forms.length; f++)")
sb.Append("{")
sb.Append("var lForm = document.forms[f];")
sb.Append("for(var e=0; e < lForm.elements.length; e++)")
sb.Append("{")
sb.Append("var lElement = lForm.elements[e];")
sb.Append("if (lElement.type == 'button' || lElement.type == 'submit')")
sb.Append("lElement.disabled = true;")
sb.Append("}")
sb.Append("}")
sb.Append("document.getElementsByName('")
sb.Append(Me.OnceClickBtnName)
sb.Append("').item(0).setAttribute('name',")
sb.Append("this.getAttribute('name'));")
If Not (DisabledText = String.Empty) Then
sb.Append("this.value = '")
sb.Append(DisabledText)
sb.Append("';")
End If
sb.Append("this.form.submit();")
Return sb.ToString()
End Get
End Property
Hope this can help you.
Xiang Qin
-- modified at 10:53 Tuesday 2nd May, 2006
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Thank You qherb
for promt reply with solution
I have tested it is OK. Now I m going to use in my application
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This is great, I think Microsoft should have added this functionality to ASP.NET 2.0 as standard.
I would like to see something like this with Images, where you can set
Image.Visible = True without refreshing, just like VB windows forms.
Thank you
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one issue that can happen with the implementation of this control is that if you do a javascript document.form.submit(), it will not fire the OnSubmit javascript event on the page, which I need for another control i developed. I came up with a solution. The following subroutine was changed:
Friend ReadOnly Property GetOnceClickJavascript() As String
Get
Return "document.getElementsByName('" + Me.OnceClickBtnName + "').item(0).setAttribute('name'," + _
"this.getAttribute('name')); this.disabled = true; " + _
IIf(DisabledText = String.Empty, String.Empty, "this.value = '" + DisabledText + "';") + _
Me.Page.GetPostBackEventReference(Me) & ";"
'"this.form.submit();"
End Get
End Property
notice the last part of the string now using GetPostBackEventReference. I just discovered this little function a few days ago. never even knew it existed, but it seems to work perfect. now i get a click once button that also fires the onsubmit event on the page.
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Hey this thread is awesome! Thanks everybody for your input.
Here is my modified C# version - it's very simple and works pretty well for my purpose, but I'd like to extend it further.
- It works fine so that when you click a button:
it will disable ALL buttons, links and hyperlinks on the form until it reloads.
(to use this scenario, I send 'true' to the SetSafeButton() function.
The feature that is NOT working the way I'd like is that if you click the button and set the code to also disable things like textboxes, dropdown lists, and checkboxes(Sending 'false' to the SetSafeButton() function) - it will clear out their values. Does anybody have a quick fix for that one for the code below?
Thanks!!!
------------
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
setSafeAllControls(this.Page);
}
void setSafeAllControls(Page thispage)
{
foreach (Control elem in thispage.Controls)
{
if (elem.GetType().ToString().Equals("System.Web.UI.HtmlControls.HtmlForm"))
{
foreach (Control child in elem.Controls)
{
if (child.GetType().ToString().Equals("System.Web.UI.WebControls.Button"))
{
SetSafeButton(this.Page, true, (Button)child);
}
}
}
}
}
public static void SetSafeButton(Page thisPage, bool lockStaticControlsOnly, System.Web.UI.WebControls.Button button)
{
StringBuilder sb = new System.Text.StringBuilder();
if(button.CausesValidation)
{ sb.Append("if (typeof(Page_ClientValidate) == 'function') { ");
sb.Append("if (Page_ClientValidate() == false) { return false; }} ");
}
sb.Append("this.disabled = true;"); foreach (Control elem in thisPage.Controls)
if (elem.GetType().ToString().Equals("System.Web.UI.HtmlControls.HtmlForm")) {
foreach (Control child in elem.Controls)
{
if(!lockStaticControlsOnly)
{
switch(child.GetType().ToString().Replace("System.Web.UI.WebControls.",""))
{
case "Button":
case "LinkButton":
case "HyperLink":
case "TextBox":
case "CheckBox":
case "CheckBoxList":
case "RadioButton":
case "RadioButtonList":
sb.Append(child.ClientID+".disabled = true;");
break;
default: break;
}
}
else
{
switch(child.GetType().ToString().Replace("System.Web.UI.WebControls.",""))
{ case "Button":
case "LinkButton":
case "HyperLink":
sb.Append(child.ClientID+".disabled = true;");
break;
default: break;
}
}
}
}
sb.Append(thisPage.Page.GetPostBackEventReference(button));
sb.Append(";");
button.Attributes.Add("onclick", sb.ToString());
}
private void btnSubmit_Click(object sender, System.EventArgs e)
{
Thread.Sleep(2000); Label1.Text+="
OK";
}
private void btnCancel_Click(object sender, System.EventArgs e)
{
Thread.Sleep(2000); Label1.Text = "";
}
Trond
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ok so I plugged this in and realized it has bugs. If the page is already invalid from for example a requiredFieldValidator kicking in, and I click a button - the clicked button will just stay disabled - as Eric mentioned initially.
My goal for my approach is to have one function that I could invoke once per page (e.g. in page_load for a usercontrol for my projects navbar) that will scan the page automatically for buttons and attach the javascript to them... So if anyone has a suggestion on how to fix this, i'd be psyked!!!
Thanks again,
T
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OK I got that bug fixed so now it seems pretty flawless - I'll post the code if anyone's interested. It is however limited to only work for buttons....
Trond
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Hey Trondborg,
I am trying to use the DLL to implement it in my web solution which is written in C#. I am referencing the DLL, Added the modified button control to my Tool Box, added this control to the page with all required steps. When I run the page, I comeup with the following error (see below). It seems you were able to run this control in your c# code, what changes did you make? I dont understand the code which you posted. Please help!!
=================================================================================================
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0234: The type or namespace name 'ClickOnceButton' does not exist in the class or namespace 'ClickOnceButton.ClickOnceButton' (are you missing an assembly reference?)
Source Error:
Line 1607:
Line 1608: private System.Web.UI.Control __BuildControlClickOnceButton1() {
Line 1609: ClickOnceButton.ClickOnceButton __ctrl;
Line 1610:
Line 1611: #line 240 "http://localhost/GiantBed/ControlModules/RegistrationForm.ascx"
Source File: c:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\giantbed\48896e80\3e53f560\nhb1rk62.0.cs Line: 1609
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