If you want to check if the given entry (string) is a valid date you could have used Microsoft.VisualBasic.IsDate Function in .NET. This function is available in VB.NET. For C# you can have a similar function
Here is a hint how to create that
private void IsDateExample()
{
//string s1 = DateTime.Now.ToString();
bool bSuccess = false;
DateTime d1;
s1 = "17-Mar-20112";
bSuccess = DateTime.TryParse(s1, out d1);
if (bSuccess == true)
{
Console.WriteLine(d1.ToString());
}
else
{
Console.WriteLine("Not a date at all");
}
}
The function uses DateTime.TryParse to validate the given string
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