ASP .NET MVC2 Changes: GetControllerInstance & DataAnnotationsModelBinder

Taswar Bhatti March 30, 2010 2 Comments

Here are some changes that affected my asp mvc update process, specifically ASP .NET MVC2 Changes: GetControllerInstance & DataAnnotationsModelBinder. By the way, there is a tool that does it for you and also a manual way . But once you have updated there are also 2 more changes that you may need if you are […]

aspmvc

ASP .NET, aspmvc2, mvc2

Spark View Engine: Highlight Table Alt Row

Taswar Bhatti March 29, 2010 No Comments

So you want to use Spark View Engine: Highlight Table Alt Row. Here is how one highlights an alt row with spark, quite clean I tell you. Assuming you have a css that like below.

tr.alt {
    text-align: left;
    padding: 2px;
    border: 1px solid #000;
    background:	#ADDFFF;
}

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tr.alt {

text-align: left;

padding: 2px;

border: 1px solid #000;

background: #ADDFFF;

}

And in your template you will call it like this.

<table>
<tr>
	<th>ID</th>
	<th>FirstName</th>
	<th>LastName</th>
	<th>Gender</th>
</tr>
<tr each="var person in people" class="alt?{personIndex % 2 == 0}">
	<td>${person.Id}</td>
	<td>${person.FirstName}</td>
	<td>${person.LastName}</td>
	<td>${person.Gender}</td>	
</tr>
</table>

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<table>

<tr>

<th>FirstName</th>

<th>LastName</th>

<th>Gender</th>

</tr>

<td>${person.Id}</td>

<td>${person.FirstName}</td>

<td>${person.LastName}</td>

<td>${person.Gender}</td>

</tr>

</table>

Note: How I am using personIndex. It basically […]

aspmvc

css, sparkviewengine

Linq Sequence contains no matching element

Taswar Bhatti March 26, 2010 6 Comments

So sometimes you will get these strange errors or exceptions when using Linq Sequence contains no matching element For example if you use

var result = myEnumerableCollection.First(x => x.Name == person.Name);

1	var result = myEnumerableCollection.First(x => x.Name == person.Name);

This will throw InvalidOperationException with Sequence contains no matching element. But if you use

var result = myEnumerableCollection.FirstOrDefault(x => x.Name == person.Name);
if(result == null)
 //did not find in the collection something went wrong or .....

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var result = myEnumerableCollection.FirstOrDefault(x => x.Name == person.Name);

if(result == null)

//did not find in the collection something went wrong or .....

Which will return you a null if its not found then you can check if the […]

.NET, Misc

.net, FirstOrDefault, LINQ

ASP .NET MVC2 Changes: GetControllerInstance & DataAnnotationsModelBinder

Spark View Engine: Highlight Table Alt Row

Linq Sequence contains no matching element

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