/// <summary>
/// Tests whether or not all columns in this collection have the same type.
/// </summary>
/// <param name="col">The column collection containing the columns to test.</param>
/// <param name="selectedColumnIndices">The column indices of the columns to test.</param>
/// <param name="firstdifferentcolumnindex">Out: returns the first column that has a different type from the first column</param>.
/// <returns>True if all selected columns are of the same type. True is also returned if the number of selected columns is zero.</returns>
public static bool AreAllColumnsOfTheSameType(DataColumnCollection col, IContiguousIntegerRange selectedColumnIndices, out int firstdifferentcolumnindex)
{
firstdifferentcolumnindex = 0;
if (0 == col.ColumnCount || 0 == selectedColumnIndices.Count)
{
return(true);
}
System.Type firstType = col[selectedColumnIndices[0]].GetType();
int len = selectedColumnIndices.Count;
for (int i = 0; i < len; i++)
{
if (col[selectedColumnIndices[i]].GetType() != firstType)
{
firstdifferentcolumnindex = selectedColumnIndices[i];
return(false);
}
}
return(true);
}
/// <summary>
/// Constructs an integer range from another integer range.
/// </summary>
/// <param name="from">The integer range to copy from.</param>
public ContiguousNonNegativeIntegerRange(IContiguousIntegerRange from)
{
_start = from.Start;
_count = from.Count;
EnsureValidity();
}
/// <summary>
/// Constructs an integer range from another integer range.
/// </summary>
/// <param name="from">The integer range to copy from.</param>
public ContiguousNonNegativeIntegerRange(IContiguousIntegerRange from)
{
_start = from.Start;
_count = from.Count;
EnsureValidity();
}
/// <summary>
/// Constructs an integer range from another integer range.
/// </summary>
/// <param name="from">The integer range to copy from.</param>
public ContiguousIntegerRange(IContiguousIntegerRange from)
{
AssertValidStartAndCount(from.Start, from.Count);
_start = from.Start;
_count = (uint)from.Count;
}
