not all code paths return a value: array in c#

I am new to c#. Struggling with printing Array values. Throwing error "not all code paths return a value". Pls help me. Below is the code. Im calling this class from aspx file. Want to print in my web page. Thanks in advance.

 
public class ArrayExample
{
    int[,] myTable = new int[2, 3];
    public ArrayExample()
	{
		//
		// TODO: Add constructor logic here
		//
        myTable[0, 0] = 1;
        myTable[0, 1] = 2;
        myTable[0, 2] = 3;
        myTable[1, 0] = 4;
        myTable[1, 1] = 5;
        myTable[1, 2] = 6;
	}
    public int CallArray()
    {
        for (int row = 0; row < myTable.GetLength(0); row++)
        {
            for (int col = 0; col < myTable.GetLength(1); col++)
            {
                return myTable[row,col];
                
            }
        }
    }
 
}

 
Im calling this class from by Aspx.cs file.
 

 protected void btnArray_Click(object sender, EventArgs e)
    {
        ArrayExample aex = new ArrayExample();
        Response.Write(aex.CallArray());
    }

i want to print this in array format in my web page