How to call a jquery from vb codebehind (asp)

Question

I am new to jqueries and I have a problem calling a dialog box If ever my user has an invalid search query and did not put a starting date. See I have this jquery code

$(function(){          
  $("#dialog").dialog(function() {                                    
     $("#dialog").dialog()};
  });
});

Now I have these codes in vb :

 Sub Subsearch()
    If txtfrom.Text <> "" And txtto.Text <> "" Then
        //some codes

    ElseIf txtfrom.Text <> "" And txtto.Text = Nothing Then
        //some codes

    ElseIf txtfrom.Text = Nothing And txtto.Text <> "" Then

        //call my JQuery 

    Else
        // some codes

    End If
End Sub

Now how do I do this?

try to wrap your jqery in a string and then print that string with the help of response.write for instance. Dim myJquery as string ="$(function(){$("#dialog").dialog(function() {"#dialog").dialog()};}); });" make sure they are all in a same line and now do respose.write(myJquery) — freaky
– freaky, Commented Feb 6, 2013 at 6:42
Its ok but have you called jquery then jquery-ui then put this code and in this code you have one extra }. — Jai
– Jai, Commented Feb 6, 2013 at 6:45

coder · Accepted Answer · 2013-02-06 07:19:26Z

4

Try this:

Update to VB.NET

ClientScript.RegisterClientScriptBlock(Me.[GetType](), "blah", "myfunction();", True

If you're using a ScriptManager, use RegisterStartupScript(), use it this way:

ScriptManager.RegisterStartupScript(this, GetType(), "modalscript",
"$(function() { $('#dialog').dialog(); });", true);

edited Feb 6, 2013 at 7:19

answered Feb 6, 2013 at 6:43

coder

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7 Comments

Ley47 Over a year ago

Do i put this after the elseif ? it says "this" is not declared

Ley47 Over a year ago

How do I name my function? Or know its name

coder Over a year ago

add something like myfunction() which is a name given to a function between your function{ as $(function myfunction()

Ley47 Over a year ago

I tried putting the first one but the ";" and "this" are underlined blue

Ley47 Over a year ago

Hi @coder.. I have tried this near to your code ClientScript.RegisterClientScriptBlock(Me.GetType(), "error", "myfunction();", True) and it worked I alse added this $('#dialog').dialog('open'); and autoOpen:false; It works already now my problem is it appears every page load.. but also appears when the validation is met

|

freaky · Accepted Answer · 2013-02-06 06:51:11Z

0

dim myjquery as string="$(function(){ $('#dialog').dialog(function() {$('#dialog').dialog()} ;  }); });"
response.write(myjquery)

Let me know if it works or not

answered Feb 6, 2013 at 6:51

freaky

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1 Comment

Ley47 Over a year ago

the "#" sign turns blue and then an error saying "End of statement expected" comes out

SQLGuru · Accepted Answer · 2013-02-06 06:43:41Z

-2

you could use the JQuery to validate your input boxes, thereby not having to use the VB code to do it...

http://docs.jquery.com/Plugins/Validation

http://speckyboy.com/2009/12/17/10-useful-jquery-form-validation-techniques-and-tutorials-2/

answered Feb 6, 2013 at 6:43

SQLGuru

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2 Comments

Ant P Over a year ago

jQuery validation is not a substitute for server-side validation.

Ant P Over a year ago

You weren't talking about adding an 'extra layer' of validation. You wrote, "thereby not having to use VB code to do it." Client-side validation should be for user experience purposes only - not as a replacement for server-side validation. If you are only implementing client-side validation then I can bypass it completely simply by switching Javascript off. Then, I can post whatever values I want, which, depending on the scenario, could open the way to devastating attacks.

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