Get a DataTable Columns DataType

DataTable dt = new DataTable();  
dt.Columns.Add(new DataColumn(gridColumn1, typeof(bool)));

I was expecting the result of the below line to include info about the DataColumns Type (bool):

?dt.Columns[0].GetType()

What you want to use is this property:

dt.Columns[0].DataType

The DataType property will set to one of the following:

Boolean
Byte
Char
DateTime
Decimal
Double
Int16
Int32
Int64
SByte
Single
String
TimeSpan
UInt16
UInt32
UInt64

DataColumn.DataType Property MSDN Reference

You could always use typeof in the if statement. It is better than working with string values like the answer of Natarajan.

if (dt.Columns[0].DataType == typeof(DateTime))
{
}

dt.Columns[0].DataType.Name.ToString()

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