Validate Date using C#

In this tutorial, i will teach you how to create a program that validates an inputted date using C#, thus this will determine if a date is invalid or not. Here, we will use the IsDate Function. So, now let's start this tutorial! 1. Let's start with creating a Windows Form Application in C# for this tutorial by following the following steps in Microsoft Visual Studio: Go to File, click New Project, and choose Windows Application and name your project as Valid or Invalid Date. 2. Next, add only one Textbox named TextBox1. Then add a button named Button1 labeled as "Validate" for us to know that the date we have entered in our TextBox is a valid date or not. You must design your interface like this: design 3. Now, put this code in Button1_Click. This will determine if the date is valid or not in our inputted textbox.
  1. public void Button1_Click(System.Object sender, System.EventArgs e)
  2.                 {
  3. MessageBox.Show(TextBox1.Text + " is a valid date: " + Information.IsDate(TextBox1.Text));
  4.                 }
This IsDate function in Information class here checks if the given expression is a valid date and returns a boolean true or false. IsDate returns True if Expression is of the Date Data Type or can be converted to Date; otherwise, it returns False.IsDate returns True if Expression represents a valid date, a valid time, or a valid date and time. Press F5 to run the program. Output: output Best Regards, Engr. Lyndon Bermoy IT Instructor/System Developer/Android Developer/Freelance Programmer If you have some queries, feel free to contact the number or e-mail below. Mobile: 09488225971 Landline: 826-9296 E-mail:[email protected] Add and Follow me on Facebook: https://www.facebook.com/donzzsky Visit and like my page on Facebook at: https://www.facebook.com/BermzISware

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