comparing dates

ds ps

i have a textbox control which displays date (only in MM/dd/yyyy format) from database & a datetime picker for entering another date (usually current date but might be past or future date).When user pickes the date from datetime picker, i have to compare this date with textbox's date and throw some message.Can anyone help me in this matter? i tried with following codes
string textdate1 = textbox.text;
string textdate2 = datetimepicker1.text;
System.DateTime d1 = System.DateTime.Parse(textdate1);
System.DateTime d2 = System.DateTime.Parse(textdate2);

if (System.DateTime.Compare(d1, d2) < 0)
{
MessageBox.Show("date 2 is later then date 1");
}
its urgent plz...

16 Replies

Know the answer? Post it — somebody with the same question will find it here.

ds ps17y ago
i did it with some tricks for date by splitting the date and taken date as required in my custom format, and now it is ok. however i thank u for the efforts u've given for giving me solution.
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Niradhip Chakraborty17y ago
Send your entire page code. I will check it in my end.
0
ds ps17y ago
you have given the same solution. there is no difference.... how can i overcome the existing problem?
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Niradhip Chakraborty17y ago
Yes you are right. Please check carefully the following reply and do it same way to overcome the problem.
private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
{
DateTime dt1 = dateTimePicker1.Value;
DateTime dt2 = DateTime.Parse(textBox1.Text, System.Globalization.CultureInfo.CreateSpecificCulture("en-US").DateTimeFormat);//Convert.ToDateTime(textBox1.Text);

if (dt2 > dt1)
{
MessageBox.Show("Please select the date greater than textbox date");
}
}
private void Form1_Load(object sender, EventArgs e)
{
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "MM/dd/yyyy";
}
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ds ps17y ago
i finally knew why its giving error... though the format for datetime picker control is MM/dd/yyyy, it is taking value as dd/MM/yyyy.and the textbox control also taking the same format... so when i input 08/22/2009 it gives error but when i input 08/06/2009 it is working... so now how can i change the date format in both the controls? if u've answer then plz share for me.
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Niradhip Chakraborty17y ago
I have no idea why it is not working at your end. Check it once again my previous reply. The code will surely work. Check the code.
DateTime dt2 = DateTime.Parse(textBox1.Text, System.Globalization.CultureInfo.CreateSpecificCulture("en-US").DateTimeFormat);
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ds ps17y ago
Well u guys have helped me a lot but its making me mad.. as the same problem is coming when i execute the code. both of the solution didn't work , is there anything that i'm missing?? adding reference like such things..................... its really funny that the same thing works at ur side and not while i use.................
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Kirtan Patel17y ago
Hi ,

take a Look at Fully Tested And Working Code .

I have provided my Project Files Refer it if Still having problem after implementing Code . Link is at bottom of post

dont forget to mark "Do you like Answer" it will give me some credits :)

private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text != "" || textBox2.Text != "")
            {
               //parse Both Dates From TextBoxes
                DateTime d1 = DateTime.Parse(textBox1.Text.Trim());
                DateTime d2 = DateTime.Parse(textBox2.Text.Trim());
                //Compare Dates
                if (d2 > d1)
                {
                    MessageBox.Show("Date 2 is Greater!!");
                }
                else
                {
                    MessageBox.Show("Date 1 is Greater");
                }
            }
            else
            {
                MessageBox.Show("Please Select Date From DateTime Picker");
            }
        }

        private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
        {
            // Set Datetime Picker Date value in text Box
            textBox1.Text = dateTimePicker1.Value.Date.ToShortDateString();
        }
Download Project Files
0
Niradhip Chakraborty17y ago

private void dateTimePicker1_ValueChanged(object sender, EventArgs e)
{
DateTime dt1 = dateTimePicker1.Value;
DateTime dt2 = DateTime.Parse(textBox1.Text, System.Globalization.CultureInfo.CreateSpecificCulture("en-US").DateTimeFormat);//Convert.ToDateTime(textBox1.Text);

if (dt2 > dt1)
{
MessageBox.Show("Please select the date greater than textbox date");
}
}
private void Form1_Load(object sender, EventArgs e)
{
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "MM/dd/yyyy";
}
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ds ps17y ago
My value is 08/12/2009 i.e in MM/dd/yyyy format.i just wonder if that is giving error:(
same format i have used on datetimepicker too.it may give problem on that too,isn't?
however thanks for replying... and hope to get solution from u...
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Niradhip Chakraborty17y ago
Can you please send me the value of the textbox. I just want to check the format. I have tried with passing in following format in textbox and it works for me.
25/10/2009
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ds ps17y ago
i tried with the code provided by you but the string was not recognised as datetime error thrown on the following line:
DateTime dt2 = Convert.ToDateTime(textBox1.Text)
what should i do? i'm just stuck with this....
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Niradhip Chakraborty17y ago
convert the textbox date to datetime. Check my previous reply.
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ds ps17y ago
Thanks for the quick reply.but i still have problem in the line while converting textbox1.text value to datetime.here shows string is not recognised as datetime error shown.could you please help me......
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Master Billa17y ago
Hi

Your code is correct, according your requirement display message and change the logic

thank you
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Niradhip Chakraborty17y ago

DateTime dt1 = dateTimePicker1.Value;
DateTime dt2 = Convert.ToDateTime(textBox1.Text);

if(dt2 >dt1)
{
MessageBox.Show("Please select the date greater than textbox date");
}
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