How To Compare system DateTime and user input DateTime in asp.net with c#

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dear one,

One Doubt for asp.net applications,

"System datetime and entering datetime from user(textBox)."

How to Compare These Two date Time in asp.net c#.

i. System.DateTime="2011-12-02 16:01:52.000";
ii. UserDateaTime="2010-12-02 16:01:52.000";

Condition: if Textbox date is not exceeds for System datetime)
1. Condition True, Message Through "Ur Date is past or today.";

2. Otherwise Message Through "Ur date time is Future Date."

Error: Operator '<' cannot be applied to operands of type 'System.Web.UI.WebControls.Label

give me solution.

By mohan

Posted 25-Nov-11 21:13pm

Mohankumar.Engain

Updated 25-Nov-11 23:50pm

v3

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JBSAHU · Answer 1 · 2011-11-25T23:44:00

protected void Button1_Click(object sender, EventArgs e)
{
DateTime dt1 = DateTime.Now.Date;
DateTime dt2 = Convert.ToDateTime(TextBox1.Text.Trim()).Date;

if (dt1 >= dt2)
{
Label1.Text = "present/Past date";
}
else
{
Label1.Text = "Future date";
}
}

Niranjankr · Answer 2 · 2011-11-25T21:55:00

C#

protected void Button1_Click(object sender, EventArgs e)
    {
        string dt1 = DateTime.Now.ToString("MM/dd/yyyy");
        string dt2 = TextBox1.Text;
        if (dt1 == dt2)
        {
            TextBox1.Text = "Correct";
        }
        else TextBox1.Text = "Wrong";
    }

try it..and advice your end MM/dd/yyyy formate ..

Eduard Lu · Answer 3 · 2011-11-25T21:41:00

Solution 4

You can use the DateTime.Compare method or compare validator of ajax validation. Or convert it to Int64 by removing the ":" or "/" then compare the values.

Best regards,
Eduard

Posted 25-Nov-11 21:41pm

Eduard Lu

RaisKazi · Answer 4 · 2011-11-25T21:35:00

Wihout looking out your code, I can guess their is a significant problem in your code.

Because you mentioned -

Quote:
System Current date time and user input date time.

And error is -
Error: Operator '<' cannot be applied to operands of type 'System.Web.UI.WebControls.Label

System.Web.UI.WebControls.Label is not a input control.

You may use CompareValidator to validate input Date entered in TextBox against Systems Current Date.

http://forums.asp.net/t/1116715.aspx/1

RaviRanjanKr · Answer 5 · 2011-11-25T21:19:00

Solution 2

Try
DateTime.Compare Method[^] which will Compares two instances of DateTime and returns an integer that indicates whether the first instance is earlier than, the same as, or later than the second instance.
or try
http://forums.asp.net/t/1025431.aspx/1[^]

Posted 25-Nov-11 21:19pm

RaviRanjanKr

_Tushar Patil · Answer 6 · 2011-11-25T21:16:00

Solution 1

Refer This.....

http://forums.asp.net/t/1473822.aspx/1[^]

Posted 25-Nov-11 21:16pm

_Tushar Patil