CODEWITHSUNDEEP
c#.net
RollRoll
RollRoll

Reputation: 8462

How to check if a dynamic object is an array in c#?

I have a dynamic object that sometimes is an object and sometimes is an object[].

How can I check if the dynamic object is an array?

Upvotes: 18

Views: 17943

Answers (3)

AleX_
AleX_

Reputation: 508

To complement Rango's original response, a more generic way to determine is to use the type's IsSerializable property. Because if the object is a List or any other collection, the IsArray returns false.

int [] array = {1,2,3,4};
Type t1 = array.GetType();
// t1.IsArray == true
List<int> list = new List();
list.AddRange(array);
Type t2 = list.GetType();
//t2.IsArray = false;
//t2.IsSerializable = true;

foreach(var i in list) {
        // do stuff
}

Upvotes: 0

NNP
NNP

Reputation: 3451

Why not just 'is' operator (I just did quick test on immediate windows of Visual Studio debugger), and it works. but not sure if Tim's answer is optimal.

void foo(object o)
{
if( o is System.Array)
{
//its array
}

}

Upvotes: 7

Tim Schmelter
Tim Schmelter

Reputation: 460048

Use Type.IsArray:

From MSDN: 

int [] array = {1,2,3,4};
Type t = array.GetType();
// t.IsArray == true
Console.WriteLine("The type is {0}. Is this type an array? {1}", t, t.IsArray);

Upvotes: 32

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