How can I access custom Textbox attributes in ASP.Net?

Question

I am using/abusing CSS classes and custom html attributes to provide default data to a set of textboxes. The code-front for this looks like the following (with some supporting javascript to handle checking/setting the default data when the field is blank):

<asp:TextBox ID="TXT_LenderName" class='defaultText' data-default='Institution Name' runat="server"></asp:TextBox>

This works.

I am working on the code-behind to process this form. I would like to be able to compare the value of the TXT_LenderName.Text to the value of the data-default attribute, but I haven't been able to find a way to get the value of a custom html attribute. Suggestions?

DefaultValue would be a good way to do this as well, and at the time of this post, I was not aware of that attribute on text box controls. Am I correct to assume that this attribute is not available to the browser once the control is rendered? — Jeffrey Blake
– Jeffrey Blake, Commented Nov 30, 2012 at 22:49

Mykola · Accepted Answer · 2016-02-18 10:11:58Z

11

This is tested and worked

string customAttrDataDefault = TXT_LenderName.Attributes["data-default"];
txtpassword.Attributes.Add("value","Password value");

edited Feb 18, 2016 at 10:11

Mykola

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answered Oct 8, 2012 at 16:53

Adil

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1 Comment

Jeffrey Blake Over a year ago

Is the .ToString() actually necessary for any reason? .Attributes is already of type string from what I can tell.

ebram khalil · Accepted Answer · 2012-10-08 16:51:51Z

4

try this:

TXT_LenderName.Attributes["AttributeName"]= value;//here get or set the value.

answered Oct 8, 2012 at 16:51

ebram khalil

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1 Comment

Leandro Over a year ago

I had to use () instead of [] like this TXT_LenderName.Attributes("AttributeName") in order to work. Did I miss something?

Kirk Spencer · Accepted Answer · 2012-10-08 16:52:10Z

4

If the control, like the TextBox control inherits from the System.Web.UI.WebControls.Control class then it should have an Attributes property which is a name value pair collection of the control's attributes.

answered Oct 8, 2012 at 16:52

Kirk Spencer

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