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Differnece Start and end date check no of months

vidya kumari

14y2.2k.NET

I have three text StartTextbox and EndTextBox ,Textbox3 .Please careful textbox3(No of month). Now I want difference of start date and end date is Checked by No of Months .

Here function in customvalidation
protected void ValidateDuration(object sender, ServerValidateEventArgs e)
{
DateTime start = DateTime.Parse(StartTextBox.Text);
DateTime end = DateTime.Parse(EndTextBox.Text);

int months = (end.Month - start.Month) + 12 * (end.Year - start.Year);

e.IsValid = months <=TextBox3;
}

1 Reply

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Senthilkumar14y ago
Hi Vidya,

Try this, it will give you exactly number of months between two dates.

private static int monthDifference(DateTime startDate, DateTime endDate)
{
int monthsApart = 12 * (startDate.Year - endDate.Year) + startDate.Month - endDate.Month;
return Math.Abs(monthsApart);
}