How to Parse datetime in multiple formats

Here is how we can parse different date formats get validated using one function.

In VB.NET

'''Validate method for Date format
  Private Function validateDate(ByVal strDate As String, ByVal strColumnName As String) As String
        Dim strError As String = ""
        Dim provider As CultureInfo = CultureInfo.GetCultureInfo("en-us")
        Dim formatStrings As String() = {"MM/dd/yyyy", "yyyy-MM-dd", "d"}
        Dim dateValue As DateTime
        Try
            If DateTime.TryParseExact(strDate, formatStrings, provider, DateTimeStyles.None, dateValue) Then
                strError = "Success"
            Else
                strError = "Failed"
            End If
        Catch ex As Exception

        End Try
        Return strError
    End Function

In C#

///Validate method for Date format
private string validateDate(string strDate, string strColumnName)
{
    string strError = "";
    CultureInfo provider = CultureInfo.GetCultureInfo("en-us");
    string[] formatStrings = {
        "MM/dd/yyyy",
        "yyyy-MM-dd",
        "d"
    };
    DateTime dateValue = default(DateTime);
    try {
        if (DateTime.TryParseExact(strDate, formatStrings, provider, DateTimeStyles.None, out dateValue)) {
            strError = "Success";
        } else {
            strError = "Failed";
        }

    } catch (Exception ex) {
    }
    return strError;
}

Add as many as formatters to the formatStrings array and use this funtion. Happy Coding ☺☻