Code-behind: dynamically display / hide a HTML element

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For an HTML element , I can dynamically hide it by

C#

sourceDoc1.Attributes["style"] = "display: none";

After it is hidden, but I can't turn it to displayed by

C#

sourceDoc1.Attributes["style"] = "display: block";

What's wrong in my 'turn-on' code? Thanks.

What I have tried:

Code-behind: Dynamically display / hide a HTML element

Posted 29-Apr-16 7:08am

s yu

Updated 29-Apr-16 7:19am

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Richard Deeming · Accepted Answer · 2016-04-29T07:19:00

Solution 1

Try:

C#

sourceDoc1.Style["display"] = "none";

and:

C#

sourceDoc1.Style["display"] = "block";

If that doesn't work, you'll need to examine the rendered HTML, and use the browser's developer tools to inspect the element to see why it's not visible.

Posted 29-Apr-16 7:19am

Richard Deeming

Comments

s yu 29-Apr-16 13:39pm

RD: Thanks for your response. I tried but the results are the same. I also tried
sourceDoc1.Attributes.CssStyle.Value = "display:block";
and
sourceDoc1.Attributes.CssStyle.Value = "display:block; visibility:visible";
the results are the same even though its value is correct though the debugging.
Don't know why. Thanks anyway.

Richard Deeming 29-Apr-16 13:45pm

So as I said, look at the generated HTML, and use your browser's developer tools to inspect the element.

s yu 29-Apr-16 14:14pm

You are right. I added sourceDoc1.Visible = true; then the problem is solved. Thanks.