Attributes.add will not work.

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Hi

I can't make the Attributes.Add work. Here I'm trying to change the default text from the code but I can't get it to change. I've tried with background-color also. Still no restult.

Anyone have the answere?

Jesper

What I have tried:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)

BoxFirstname.Attributes.Add("Text", "Test text")

End Sub

<asp:textbox id="BoxFirstname" placeholder="Firstname" runat="server" class="medinput" onkeypress="javascript:login(event);">

Posted 18-Feb-21 3:09am

Member 15076984

Updated 19-Feb-21 3:57am

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20212a 18-Feb-21 9:17am

Html textboxes do not have a text property. You use the placeholder property.

F-ES Sitecore 18-Feb-21 9:44am

Or "value" if they want the text in the box to be changed.

20212a 18-Feb-21 9:52am

True. But I can't really tell what they are asking.

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Richard Deeming · Accepted Answer · 2021-02-18T04:24:00

Solution 1

If you want to change the Text property, then set the Text property. But make sure you only do it when the page is first loaded, otherwise you'll overwrite whatever value the user has entered.

VB.NET

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    If Not Page.IsPostBack Then
        BoxFirstname.Text = "Test text"
    End If
End Sub

If you want to change the placeholder, then you need to set the placeholder attribute:

VB.NET

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    If Not Page.IsPostBack Then
        BoxFirstname.Attributes.Add("placeholder", "Test text")
    End If
End Sub

If you want to set the background colour, you need to modify the style:

VB.NET

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    If Not Page.IsPostBack Then
        BoxFirstname.Style.Add("background-color", "#424242")
    End If
End Sub

Posted 18-Feb-21 4:24am

Richard Deeming

Comments

Member 15076984 19-Feb-21 4:18am

Thanks for answer. I've now added all three to my Page_Load and same result, still no change of text or color. But the weird thing is that I've a button that picks up the value that is entered using .text and it works. Any ideas?

Richard Deeming 19-Feb-21 4:27am

That doesn't make any sense. Either the page is cached, or you're not looking at the control you're modifying.

Member 15076984 19-Feb-21 4:30am

True it dosen't. I've just cleared all cookies and the control is picked from the VB suggestions.

Richard Deeming 19-Feb-21 4:34am

But are you sure it's the same control you're looking at in the browser?

What happens if you set the text directly in the markup?

Could there be something else running on the server or the client that's changing the text after this code runs?

Member 15076984 19-Feb-21 4:44am

Hi again. I think I'm getting closer it was my page_load that was the problem it's on a ascx page and is not called. I've to change the sub. Thanks for the effort.

Richard Deeming 19-Feb-21 4:47am

Do you have AutoEventWireup turned on, either for the site or the page?
PagesSection.AutoEventWireup Property (System.Web.Configuration) | Microsoft Docs[^]

Member 15076984 19-Feb-21 4:51am

Is was turned off ;) Thanks it works fine now

Member 15076984 19-Feb-21 10:00am

Sorry back again.

When AutoEventWirup is true the BoxFirsname.text is the original text but when it is false it is the changed text.

Do you know why ?

Jesper

Richard Deeming 19-Feb-21 10:35am

That sounds like the opposite of what should be happening. Debug your code to make sure the Page_Load method is being called as expected.

Member 15076984 22-Feb-21 4:18am

Hi Richard.
When AutoEventWireup is true the code in the Page_Load pulls the data from the database on the customer. But when the data in the from is changed the sub that is called stores the original data. When it's false Page_Laoad is not working but after data is entered the new data is stored as it should be.
It's very weired that I can't get both functions to work on the same code.
Regards,
Jesper

Richard Deeming 22-Feb-21 4:20am

Without seeing the code, this is just a guess: are you loading the data from the database on every load, without checking the Page.IsPostBack first?

If you do that, the database values will overwrite the values entered by the user.

Member 15076984 22-Feb-21 4:27am

Thanks but it's not the data that is the problem. When it's false Page_Load is not activated at all. Do you want to see the code?

Richard Deeming 22-Feb-21 4:36am

If you change the value of the control in the Page_Load event without first checking the Page.IsPostBack property, you overwrite whatever the user has entered. When you then save the control values back to the database, you are saving the original values, not the values that the user has entered.