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I describe C# as VB with its Sunday clothes on
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ZurdoDev wrote: A lot of developers seem to have a superior view of themselves and C#, likely because of the word "Basic" in VB
Yes, this arrogance (based upon a false premise) is something that annoys me too.
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Like you I built a lot of very valid business applications in VB6 then VB.net
In the early days of the .net era I found the lack of VB.net examples and support extremely frustrating and changed to c#, the wealth of c# code out there is just incredible and was well worth the minimal pain of changing to c#. There is no better reason to change (except possibly the lack of support for VB in Code).
Never underestimate the power of human stupidity -
RAH
I'm old. I know stuff - JSOP
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Mycroft Holmes wrote: I found the lack of VB.net examples and support extremely frustrating and changed to c#, the wealth of c# code out there is just incredible and was well worth the minimal pain of changing to c#. There is no better reason to change
Yup, I could see how it was going to go with VB.Net and changed to C# for the same sort of reasons.
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When I save the attendance date from a datetimepicker as a date prior to today's date it records acceptable format but not what I really want. When I select today's date it records a date like this 2020-02-25 08:28:00.946341400.
The secondary issue is what I eluded to above. I set the custom format in the form_load to "MM, dd, yyyy" and when I select a date prior to today's date it records the date like this 2020-01-29 08:34:25.
Here is the Save Button code
Dim inserted As Integer = 0
For Each row As DataGridViewRow In dgvAttend.Rows
Dim isSelected As Boolean = Convert.ToBoolean(row.Cells("chkbox").Value)
If isSelected Then
Access.AddParam("@DTE", dtPick5.Value)
Access.AddParam("@SID", row.Cells("StudentID").Value)
Access.AddParam("@LN", row.Cells("LastName").Value)
Access.AddParam("@FN", row.Cells("FirstName").Value)
Access.ExecQuery("INSERT INTO Attend (TrainDate,StudentID,LastName,FirstName) " &
"VALUES (@DTE,@SID,@LN,@FN); ")
inserted = inserted + 1
End If
Next
If inserted > 0 Then
MessageBox.Show(String.Format("{0} records inserted.", inserted), "ACJTracker", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
Here is the form load
dtPick5.Format = DateTimePickerFormat.Custom
dtPick5.CustomFormat = "MM, dd, yyyy"
RefreshAttendGrid()
Here is the refresh Grid
dtPick5.Format = DateTimePickerFormat.Custom
dtPick5.CustomFormat = "MM, dd, yyyy"
' RUN QUERY
Access.ExecQuery("SELECT StudentData.StudentID, StudentData.LastName, StudentData.FirstName FROM StudentData ORDER BY StudentID ASC")
' REPORT & ABORT ON ERRORS
If NoErrors(True) = False Then Exit Sub
dgvAttend.DataSource = Access.DBDT
Does anyone know how I correct these issues?
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The issue is how you are displaying the saved value. Setting a date format on a DatePicker just changes the display. The actual value will be stored as a DateTime value, so when you print or display it in the future you will need to set the required format.
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It is actually saving it to the table in these formats. How can I get the app to save it in the correct format in the access table?
Also, what causes the ..946341400?
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No, it is saving it as a Date/DateTime value as shown in your code. As I said, the format only applies when you display it.
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Thanks for the answer. I figured it out once I stopped over thinking it. dtPick5.Value.ToString("MM/dd/yyyy" did the trick for both issues.
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You should never store dates as strings, use Date or DateTime values, and only apply formatting when it is displayed. For example the date 01/02/03 could be 1st February 2003, 2nd January 2003, or even 3rd February 2001, depending on where you live.
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If dtPick5.Value.ToString("MM/dd/yyyy" isn't the correct way then can you post an example of how to properly do it?
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At the risk of repeating myself again and again: use the Value. That way the date can be formatted for display into any culture.
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Member 11866893 wrote: Heaven forbid you repeat yourself or provide a code example....
The explanation is spot on, but to expand with code;
dim someDateString as String = dtPick5.Value.ToString(.. This creates a text, with the date formatted in some culture.
dim someDate as DateTime = dtPick5.Value Here the value is taken as is, without formatting. It is stored as a decimal value, with "days" in the integer part from a given offset, and the decimal part representing time. It is a format-independant version, and that's how it should be stored. Internally, your application should use DateTime values, and only formatting them as strings when displaying.
Saving the value in DateTime type is important; if you use a localized and formatted version tht is actually a string, the computer will have to convert that to a real DateTime for each operation.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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You decently cannot insult those who try to help.
"Five fruits and vegetables a day? What a joke!
Personally, after the third watermelon, I'm full."
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Ah yes, the lazy person's fallback position when you don't get someone else to do your work: abuse.
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It's the VB forum; it looks like a frustrated coder. Don't take it as a personal insult.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Eddy Vluggen wrote: Don't take it as a personal insult.
I don't; my shoulders are broad enough. But I do take exception to people being abusive on this site.
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Richard MacCutchan wrote: But I do take exception to people being abusive on this site.
Good for me I never did that 
It is one of umpteen coders frustrated at how dates don't work like they imagine. Not something unique nor new.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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The trouble with some of these people is that they will not accept advice. So no matter how much you try to help them they insist on doing it their way, without understanding the potential problems that can come back to bite them.
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Richard MacCutchan wrote: But I do take exception to people being abusive on this site.
Why is that, Thou sodden-witted lord?
Social Media - A platform that makes it easier for the crazies to find each other.
Everyone is born right handed. Only the strongest overcome it.
Fight for left-handed rights and hand equality.
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Weird since examples seem to work with a single comma.
You could try to escape extra characters (i.e., commas):
dtPick5.CustomFormat = "MM',' dd',' yyyy" or keep using a more common form.
"Five fruits and vegetables a day? What a joke!
Personally, after the third watermelon, I'm full."
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I think the issue you may be facing is that you are storing the data as datetime which naturally includes the time component. If you do not need the time component then you should store it as a date data type (not sure if Access has such a data type).
If the is a requirement for the time component then you need to format every instance of the data as it is presented and you need to cater for the time component in all your queries ie you can no longer query for a date you will need to query for the range of datetime records between midnight and midnight the date after.
Never underestimate the power of human stupidity -
RAH
I'm old. I know stuff - JSOP
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I have a textbox that I need to run this query when the value changes for the textbox.
Private Sub tbStudentID2_TextChanged(sender As Object, e As EventArgs) Handles tbStudentID2.TextChanged
mySql = "SELECT DateDiff('d', [DateofRank], [currentDate]) FROM StudentData"
ConnDB()
myCommand = New OleDbCommand(mySql, myConnection)
myCommand.ExecuteNonQuery()
myRead = myCommand.ExecuteReader
Do While myRead.Read = True
tbDays.Text = myRead(0).ToString()
Loop
End Sub
86 is display no matter which record I choose. I think it is just retrieving the first record in the in the table.
I want to display the number of days since a student has tested by subtracting DateofRank from currentDate. I am open to other ideas on how to achieve this.
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It's selecting all records from the table. You then iterate through the results, overwriting the textbox with the next value, until you get to the last record in the table.
You need a WHERE clause to select just the record you're interested in. And you need to make sure you use parameters to avoid a SQL Injection[^] vulnerability.
There's also no need to use ExecuteReader to read a single value from a single row; use ExecuteScalar instead.
Try something like this:
Private Sub tbStudentID2_TextChanged(sender As Object, e As EventArgs) Handles tbStudentID2.TextChanged
Dim studentID As Integer
If Not Integer.TryParse(tbStudentID2.Text, studentID) Then
txtDays.Text = String.Empty
Else
Using command As New OleDbCommand("SELECT DateDiff('d', [DateofRank], [currentDate]) FROM StudentData WHERE StudentID = @StudentID", myConnection)
command.Parameters.AddWithValue("@StudentID", studentID)
ConnDB()
Dim days As Object = command.ExecuteScalar()
txtDays.Text = If(Convert.IsDBNull(days), String.Empty, Convert.ToString(days))
End Using
End If
End Sub Int32.TryParse Method (System) | Microsoft Docs[^]
OleDbCommand.ExecuteScalar Method (System.Data.OleDb) | Microsoft Docs[^]
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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