[RESOLVED] String was not recognized as a valid DateTime.

when executing my code im getting :

String was not recognized as a valid DateTime.

even thought this code is working correctly on another page , below is my code :

DateTime expiration = DateTime.ParseExact(txtEndofTrial.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture);


        if (txtEndofTrial.Text == string.Empty)
        {

            string NAFendDate = "End Date Cant be Left Blank !!!";
            ClientScript.RegisterStartupScript(this.GetType(), "Alert", "alert('" + NAFendDate + "');", true);
            return;
        }

any hint please ???!!!????

Hi,

use this:

       

if (txtEndofTrial.Text
== string.Empty)

        {

             
string NAFendDate
= "End Date Cant be Left Blank !!!";

            ClientScript.RegisterStartupScript(this.GetType(),
"Alert",
"alert('" +
NAFendDate +
"');",
true);

            return;

        }else{

         DateTime expiration =
DateTime.ParseExact(txtEndofTrial.Text,
"dd/MM/yyyy",
CultureInfo.InvariantCulture);

}

Modify your code to following

try
{
    if (txtEndofTrial.Text == string.Empty)
    {
        string NAFendDate = "End Date Cant be Left Blank !!!";
        ClientScript.RegisterStartupScript(this.GetType(), "Alert", "alert('" + NAFendDate + "');", true);
        return;
    }

    DateTime expiration = DateTime.ParseExact(txtEndofTrial.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture);
}
catch(Exception ex)
{
    lblError.Text = string.Format("{0} is not in the correct format.", txtEndofTrial.Text);
}

Regards.