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Error   37  Cannot implicitly convert type 'System.Collections.Generic.List<SFM.Models.BL.EmployeeHistoryList>' to 'System.Collections.Generic.IEnumerable<SFM.Models.BL.EmployeeRegBL>'. An explicit conversion exists (are you missing a cast?)   C:\Documents and Settings\JavedAhmed\My Documents\Visual Studio 2010\Projects\SFM\SFM\Controllers\EmployeeHistoryController.cs  93  35  SFM
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phil.o 24-Jan-13 4:22am    
Very interesting...
Suresh Dasari's 24-Jan-13 4:40am    
you can do it with same class
i.e
List of employeehistorylist to IEnumerable of employeehistorylist

and not with different classes
List of employeehistorylist to IEnumerable of employeeregbl

You cannot do an explicit cast between the two types of collections you've mentioned in the error message.
For collection conversion, this[^] might help you.
 
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Comments
Orcun Iyigun 24-Jan-13 5:04am    
Nice link. My 5.
Exactly what it says, EmployeeHistoryList and EmployeeRegBL are two different classes.
 
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C#
public class TestClass
    {
        public void TestMethod()
        {
            System.Collections.Generic.List<TestClass1> testClassList = new List<TestClass1>();
            testClassList.Add(new TestClass1() { TestVariable = 1, TestVariable1 = "TestValue" });
            testClassList.Add(new TestClass1() { TestVariable = 1, TestVariable1 = "TestValue" });
            testClassList.Add(new TestClass1() { TestVariable = 1, TestVariable1 = "TestValue" });

            // You can convert list to any supported type with the same class like this (i.e List<TestClass1> to IEnumerable<TestClass1>)
            System.Collections.Generic.IEnumerable<TestClass1> testClassEnumerable = testClassList.AsEnumerable();

            // You can't convert list to any supported type with other class like this (i.e List<TestClass1> to IEnumerable<TestClass2>)
            //System.Collections.Generic.IEnumerable<TestClass2> testClassEnumerable2 = testClassList.AsEnumerable();

            //you can Convert like this 'System.Collections.Generic.List<SFM.Models.BL.EmployeeHistoryList>' to 'System.Collections.Generic.IEnumerable<SFM.Models.BL.EmployeeHistoryList>'
            //you can Convert like this 'System.Collections.Generic.List<SFM.Models.BL.EmployeeRegBL>' to 'System.Collections.Generic.IEnumerable<SFM.Models.BL.EmployeeRegBL>'
            //you can't Convert like this 'System.Collections.Generic.List<SFM.Models.BL.EmployeeHistoryList>' to 'System.Collections.Generic.IEnumerable<SFM.Models.BL.EmployeeRegBL>'
        }
    }

    public class TestClass1
    {
        public int TestVariable { get; set; }
        public string TestVariable1 { get; set; }
    }

    public class TestClass2
    {
        public int TestVariable { get; set; }
        public string TestVariable1 { get; set; }
    }
 
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v2
EmployeeHistoryList and EmployeeRegBL are not matching types
 
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You can use .toArray


C#
System.Collections.Generic.List<int> list = new System.Collections.Generic.List<int>( );
list.Add( 1 );
System.Collections.Generic.IEnumerable<int> enumer = list.ToArray( );
 
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Since 'an explicit conversion exists' you need to cast the variable to System.Collections.Generic.IEnumerable<sfm.models.bl.employeeregbl></sfm.models.bl.employeeregbl>

There is also IEnumerable.Cast<TResult>() extension method that will cast the type of all items in collection (if such cast is available).
 
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v2

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