How to add days to date automatically when select new date

Abdalla Elawad

How to add date automatically when select new date ??

I have Dropdown list contains 2 items (ATM,CIT) ,textbox1 is (date) and textbox2 is also (date)

if select date in textbox1 in text_change you must display date in textboxt2 automatically +30days if selected item from droplist is = ATM

for example if i selected date in textbox1 is (01/01/2016) should display date automatically in textbox2 (30/01/2016)

if date in textbox1= 26/01/2016 label1 display color is yellow

if date in textbox1= 30/01/2016 label1 display color is Red

if date in textbox1= 01/01/2016 label1 display color Green

if select date in textbox1 in text_change you must display date in textboxt2 automatically +35days if selected item from droplist1 is = CIT

for example if i selected date in textbox1 is (01/01/2016) should display date automatically in textbox2 (30/01/2016)

if date in textbox1= 30/01/2016 label1 display color is yellow

if date in textbox1= 35/01/2016 label1 display color is Red

if date in textbox1= 01/01/2016 label1 display color Green

protected void TextBox5_TextChanged(object sender, EventArgs e)
{

// How to add days to current date in date in other text

TextBox6.Text = TextBox5.Text;
DateTime dt = DateTime.Now.AddDays(30);
dt.AddDays(-1).ToString("dd/MM/yyyy");
TextBox6.Text = dt.ToShortDateString();
Label1.Text = ("Team Should Be Changed In:" + dt.AddDays(0).ToShortDateString());

}
}

}

please help me

14 Replies

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Abdalla Elawad10y ago

Thank you to all members who have contributed to the solution

Abdalla Elawad10y ago
This is solution

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
if (DropDownList1.SelectedItem.Text == "ATM")
{
TextBox6.Text = TextBox5.Text;
DateTime dt = DateTime.Now.AddDays(30);
dt.AddDays(-1).ToString("dd/MM/yyyy");
TextBox6.Text = dt.ToShortDateString();
Label2.BackColor = Color.Green;
Label1.Text = ("Team Should Be Changed In:" + dt.AddDays(3).ToShortDateString());
}
else if (DropDownList1.SelectedItem.Text == "CIT")
{
TextBox6.Text = TextBox5.Text;
DateTime dt = DateTime.Now.AddDays(35);
dt.AddDays(-1).ToString("dd/MM/yyyy");
TextBox6.Text = dt.ToShortDateString();
Label2.BackColor = Color.Green;
Label1.Text = ("Team Should Be Changed In:" + dt.AddDays(3).ToShortDateString());
}

}
theLizard10y ago
{
textBox2.Text = (date2 = date1).AddDays(30).ToString("dd/MM/yyyy");

}

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBox1.SelectedIndex == 1)
{
date1 = DateTime.Now;
textBox1.Text = date1.ToString("dd/MM/yyyy");
}
Abdalla Elawad10y ago
Input string was not in a correct format
Abdalla Elawad10y ago
Imtiyaz Ansari10y ago
Hello Elaward

try this...

DateTime endDate = Convert.ToDateTime(this.txtStartDate.Text);
Int64 addedDays = Convert.ToInt64(15);//change to the value as your requrement
endDate=endDate.AddDays(addedDays);
DateTime end = endDate;
this.txtEndDate.Text = end.ToShortDateString();
Abdalla Elawad10y ago
hi Mr.Manas

Briefly : i want add days to date not current date , i mean that if user selected 1/1/2016 system added 15 days becomes 16/1/2016
if selected 3/2/2016 becomes 18/2/2016

thanx to help
Manas Mohapatra10y ago
Please provide the detail info when you say "code not run"..
Abdalla Elawad10y ago
your code not run

string tempDate = "19/04/2016";
if (tempDate != string.Empty)
{
DateTime dtObj1 = DateTime.ParseExact(tempDate, "dd/MM/yyyy", CultureInfo.InvariantCulture).AddDays(30);
}
Manas Mohapatra10y ago
Try with below code:

string tempDate = "19/04/2016";
if (tempDate != string.Empty)
{
DateTime dtObj1 = DateTime.ParseExact(tempDate, "dd/MM/yyyy", CultureInfo.InvariantCulture).AddDays(30);
}
Abdalla Elawad10y ago

This is result of the first code
but add days to current days only but i need to add when use select new date
Manas Mohapatra10y ago
What is the value you are getting from Date textbox??
Abdalla Elawad10y ago
The run code is add days to current date only

but i need when user select new date must be add days but not add to current date

and another problem date connected with selected item from dropdwonlist1 when user select ATM add 30 days on Rc.Date . and 35

in label1 the color change according to date
Manas Mohapatra10y ago
Yes, you implemented the logic. So where is problem now?