string to date problem.

[Ace Master]

Hi.

 

I have this function for loading several files starting from current day.

 

Public Sub grafic_for(ByVal x, ByVal y, ByVal y1)

       'cur_day.Text = ziua
       'cur_month.Text = month
       'cur_year.Text = year

       For i As Integer = 0 To x


           ziua = Format(DatTim1.AddDays(-i), "dd")
           month = Format(DatTim1.AddDays(-i), "MM")
           year = Format(DatTim1.AddDays(-i), "yyyy")

           cale_finala = cale + ziua + month + year + ext

           Dim my As IO.StreamReader
           check_file(cale_finala)

           my = IO.File.OpenText(cale_finala)
           Dim Line As Object
           Dim space1 As Object = "	"
           Dim enter1 As Object

           Line = my.ReadToEnd
           my.Close()
           info = Line.split(space1)

           For k As Integer = y To y1
               info_total(i, k) = info(k)
           Next

       Next


   End Sub

 

The problem is that I put some textbox�s to input the data for loading those files.

 

Ex: if today is 02.12.2003 and I want the last 3 days, my function will load 02122003.txt, 01122003.txt and 30122003.txt.

 

But I want to input the starting day from textbox�s.

 

Ex: Even if current day is 02.12.2003 and I put in that textbox�s 05 11 2002 I want to load 05112002.txt, 04112002.txt and 03112002.txt.

 

Don�t know what to do here, because I get all kind of errors when I�m trying different things.

 

All I want is to change the current time with the textbox's values.

 

thanks

Edited December 2, 2003 by Ace Master

[feurich]

DateTimePicker Control

 

Can't you use a DateTimePicker Control to read the date in to a string variable and then format the string as you like it ?

 

Cire

[Ace Master]

I have now something like that. To read from textbox as the current time, but I want to make adddays(-i) and this is not posible to a string, only a date variable.

 

Today is 02 dec. If a have a string value or integer and I want to see the file from 4 days a go....I will have -2 value.

 

I need date value for receiving 29 nov.

 

All I want is to convert for ex. 02 to a date value (day) for make days substractions. The same with "11" to month value and year.

[Mothra]

You could try using CType. You'd have to make sure the text in the textbox if formatted right but you should be able to do something like this:

 

Dim myDate As Date

myDate = CType(txtYourTextBox.Text, Date)

 

Again, you'll have to make sure the text in the textbox is formatted in such a way that it will work as a Date type but, that should work. I do think that using a DateTimePicker is a better idea though, that way you're not switching types all over the place and there's less chane for problems.

[Keroleen]

hmmm..i ran into that problem b4.

 

Like someone suggested there read in using DAtetime picker

 

And then use CDate to convert from String type to Date type.

[Mothra]

If you're using a DateTimePicker control, you won't neet to convert anything. Just use the .DateValue of the picker control and it's already a Date type. If you need specific times as well as dates, you could also use a second picker and have the user select the time.

[Ace Master]

THANKS TO ALL

 

it seams that the timedate picker is the best ideea.

 

For the first tests looks allright to me.

 

best,