Develop Reference

URL is not rendering correctly in C#

I have Hyperlink in a datalist. HTML is given below:
<asp:HyperLink ID="lnkEntry" runat="server"><%# DataBinder.Eval(Container.DataItem, "Title") %></asp:HyperLink>
i have saved the URL of a Entry in the Database, like "http://test.com/posts/New-test-in-March" And used the following way to Bind it to Hyperlink in Item_databound of Datalist.
lnkEntry.NavigateUrl = objEntry.PermaLink;
But when it renders into the browser the URL get changed to "http%3a//test.com/posts/New-test-in-March"
i have tried to use the URLDecode but it doesn't make any change in output.
lnkEntry.NavigateUrl = Server.UrlDecode(objEntry.PermaLink);
Please help me how can i fix this issue.

you should use HttpUtility, like this:
lnkEntry.NavigateUrl = HttpUtility.UrlEncode(objEntry.PermaLink);
or WebUtility if running recent versions of .net.
Check this thread for more info.

Dynamically Change Label Text in SharePoint Rendering Template

If I did not have a rendering template I could add the following to my aspx page:
<asp:label ID="myLabel" runat="server" />
Then this in my code behind:
myLabel.Text = "Hello World";
But since my label is inside of a <SharePoint:RenderingTemplate> I am not able to access it the normal way.
Is there another way?
Edit: Ive found a number of articles like this one talking about creating a .dll for every rendering template. Is it really that complicated to output a string to a page? I should clarify that I am open to all ideas. I do not need code behind. I simply need to output a dynamic string to the template.

You can just create your own label control and work with it in any way you like.
There is an example here: Extending the Label Control, but it's basically like you would extend any other control.
What I would do then: Either set the .Text in that custom control directly, or what would be better is to use resource files. Then you could create your won property on the label like so:
<Custom:label ID="myLabel" specialresource="myLabel" runat="server" />
And in your class you could just handle the specialresource property and e.g. set the .Text to whatever you get from the resource.

How to append a WebControl immediately after a WebControl in CodeBehind

Now that i've been MVCing for quite sometime i decide to pop some classic C# .Net into my 8 track and have gotten the following issue:
I have a TextBox WebControl on my aspx page that in the code behind i want to simply append a LiteralControl after it.
This doesn't work:
TextBoxAge.Controls.Add(new LiteralControl("Invalid Age."));
This works but all the way at the bottom:
TextBoxAge.Controls.Parent.Add(new LiteralControl("Invalid Age."));
Can you help me!?
For example the HTML will show:
<div>
<input name="TextBoxAge" type="text" id="TextBoxAge" class="Age">
Invalid Age.
</div>
This should be purely dynamic and relative to the control at hand.
Solution:
TextBoxAge.Parent.Controls.AddAt(TextBoxAge.Parent.Controls.IndexOf(T‌​extBoxAge),new LiteralControl("<span>Invalid Age.</span>"));

Maybe you can try something like this. (Don't remember if AddAt will replace the control at the specified index )
var textBoxAgeIndex = TextBoxAge.Parent.Controls.IndexOf(TextBoxAge);
TextBoxAge.Parent.Controls.AddAt(textBoxAgeIndex +1, new LiteralControl("Invalid Age."));
Hope this will help

The best way is to use an a PlaceHolder
From MSDN: Use the PlaceHolder control as a container to store server
controls that are dynamically added to the Web page.
PlaceHolder.Controls.Add(new LiteralControl("Invalid Age."));

c# - how to set text in textbox to show hint when textbox is empty?

I am using <asp:TextBox> not HTML textbox and I want to display hint text.
Is there any way to achieve that?
I have tried for making static text and color it gray but not getting how to make it empty when cursor get focus to that textbox.

<asp:TextBox ID="TextBox1" runat="server" placeholder="Hint Text"></asp:TextBox>

Use a ASP.NET WaterMark TextBox
It is in Ajax Toolkit

You, can give in Code behind like follows
textBox.Attributes.Add(“onfocus”, “clearText(this,’” + defaultText + “‘)”);
And also refer to this to know more.

You can using "placeholder" properties for textbox.
Example
<asp:TextBox ID="TextBox1" runat="server" Width="233px" placeholder="Search"></asp:TextBox>

You could use the HTML5 placeholder attribute for that. The downside is that it's only supported by some browsers. Fortunately you have JQuery Placeholder to the rescue. This plugin makes the placeholder behavior available for unsupported browsers.
Check it out here JQuery Placeholder

text input watermarks using javascript.
refer this it might help u
http://naspinski.net/post/Text-Input-Watermarks-using-Javascript-%28IE-Compatible%29.aspx

just add property placeholder="HintText" in your asp textbox

How to set value of <input type="hidden"> in asp .net page_load without using runat="server"

i need to do the following two things...
i want to set value of in asp .net page_load. the problem is that i dont want to use runat="server". i have tried this the following but it does not work:
HtmlInputHidden hiddenControl = (HtmlInputHidden) FindControl("a");
is there a way to access in asp .net page_load without using runat="server"? ? ?
i can do this if i use but in this case i cannot access it in master page's javascript function. i have tried this but it does not work...
var hdnField = document.getElementById('<%= hdnIdentity.ClientId%>');
var hdnField = document.getElementById("hdnIdentity").getAttribute("value");
var hdnField = document.getElementById("hdnIdentity").value
what i need... i want to access content page's hidden field value in javascript in master page. is there a way ? ? ? thnx in advance regards Haroon haroon426#yahoo.com

I sometimes do the following, especially when I want control over my ids (especially when using jquery).
<asp:literal id="literal1" runat="server"><input type="hidden" id="someid" value="{0}"/></asp:literal>
Then, in codebehind you can set the value with the following:
literal1.Text = string.Format(literal1.Text, "somevalue");
This doesn't really get around using runat="server", but you haven't specified why you don't want to do that. Also, you'd have to get the value with a request.form
Update
In .net 4.0 you have much more control over your IDs. See this for more information:
http://weblogs.asp.net/asptest/archive/2009/01/06/asp-net-4-0-clientid-overview.aspx

IIRC, you need to look in the HttpRequest.Forms, somewhere in there.

If the value is part of a POST form then you want to check Request.Forms or Request.QueryString if it's a GET form.

ad 1) in aspx file just write <input type="hidden" value="<%=GetHiddenValue%>" />. And in your code behind define protected property
public class MyPage : Page {
protected GetHiddenValue { get { /*...*/ } }

You can use it in your master page javascript how ever the control name is not what you expect it to be you'd need to use ClientID to get that. If you do not apply runat=server you can only get a hold of the control as text by either traversing the .aspx file or as some one mentioned embedding it in a named tag and then doing string manipulation on the inner HTML. That is for setting it. If you need to get the value use Request[tagName] or similar

ad 2) You can use simple html code in your content page with specified id <input type="hidden" id="myHiddenField" />. Then in master page javascript use document.getElementById('myHiddenField').