I have a form which accepts the time ( start time and end time)in a text box. What i want to do is to convert it into time and get the difference of it. I googled it and found lot of question regarding converting to date and time. but i only need "time" and dont want date.
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[code]I am reading a database that holds time information in a string format, hh:mm. For some reason I am remembering a built-in function I used a long time ago to accomplish, but for the life of me I cannot remember how to do it. [code]
View 1 RepliesI have recently started programming in vb.net (or trying to) I have made a application that gets some info from a mssql server. I can get the information perfectly, but one of the items called "date" i get in to my program is a date field in UNIX time. Is there a easy way to convert that into GMT time?[ code]
View 2 Replieswhen running my program I get the following error:Conversion failed when converting date and/or time from character string. After playing a round with breakpoints I discovered the error to appear during:
sqlText = "INSERT INTO dbo.OrderDetails (OrderID, ProductID, Qty) VALUES ('" & _
orderID & "','" & prodID & "','" & prodqty & "')"
ExecuteSQL(sqlText)
[code].....
am using visual basics to develop a search on my project using the date picker but any time i try to search for a date on my SQL database i received the following error message from my programme. "Conversion failed when converting data and/or time from character string "
View 5 RepliesWhen using INSERT INTO statement to SQL 2008 R2 to a column with data type as date and the data I am taking from a DateTimePicker control with date format as short. When my system date format short set to dd/MMM/yyyy the INSERT INTO statement is working perfectly but when the system date format short set to dd/MM/yyyy I am getting the above error.I tried by changing the control format to custom and dd/MMM/yyyy but still the same error is coming.I am using VB2010 and SQLExpress 2008 R2 SP1?
View 2 Repliescmd.CommandText = "INSERT INTO Dropping (form_num, filing_date, approval_date, status) VALUES ('" + fnum + "', '" + deyt + "', '" + nulll + "', '" + stat + "')"
here is an sql query statement i run in vb.net. i keep getting the error of "Conversion failed when converting date and/or time from character string." whenever i try to execute this. the datatype of filing_date and approvale_date is "text" but the deyt variable is originally Date, converted to string: (Date.Today).ToString, like so. nulll is simply a variable with vbNullChar as its value.
I used to query:
Dim a As String
a = "INSERT INTO tblVisitor(Name, Sex, TimeIn, EnterDate)
VALUES('"& txtName.Text &"', '"& cboSex.Text &"', '"& Now() &"', '"& DateTime.Parse(cboEnterDate.Text) &"')"
[code]....
Which cboEnterDate is my DateTime Picker. Then I got the message:Conversion failed when converting date time from character string.
The error is: Conversion failed when converting date and/or time from character string.Basically I'm trying to make it so that when someone clicks a location in a list box it increments the correct field in a Stats table by 1 to say that they clicked the location. I've been trying to solve this for a while now and can't get anywhere. My date is in date format, and so is the Date field in my Stats table. My code can be seen below.
Dim Current As String
Dim Check As String
Dim objCmd2 As Object
[code]....
The issue comes in with the second SQL statement I think. I don't understand why adding a date into a date field would be an issue, I've tried adding it as a string which didn't work.
Dim i as integer
For i = 0 to 365
sqlinsert.InsertCommand="insert into cashdate (date) values (getdate()+'" & i & "')"[code]....
getdate is a function in the database that returns the datetime of now i have an error that says conversion failed when converting date or time from character string .what to do now ??
[URL]..From the above link,i studied about the conversion.But i have a confusion:Whats the difference between the following two?CInt(myString) VB Only. This function converts the expression to an integer. A run-time exception is generated if the conversion fails.
Convert.ToInt32(myString) This function converts the expression to an integer. A run-time exception is generated if the conversion fails.
When should i use the first one and when to use the second one?
how to convert system.string to char for label text?? Here it my
[Code].....
I need to get the strings from the site and input the fields strings in the label text, so I needs to convert char of system.string but i don't know how to fix it.
How can I best convert date and time string with format like:
"11/25/2009 6:30 AM" to "20091125_063000AM" ?
Is there a way of converting a unix time stamp to normal format time and date in .NET?
View 3 RepliesTitle pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 RepliesIs it possible to use a file browser to load a connection string when the start form is loaded?
Using ofb As New OpenFileDialog
If ofb.ShowDialog = Windows.Forms.DialogResult.OK Then
Dim cConnectionString As String = ofb.FileName
[Code]....
I have trying to complete an assignment where I have to convert a string from user input to all different US time zones and then display them. At first I tried doing this just by using math but it seemed extremely inefficient and messy so I was told to use the DateTime function which seems easier with the exception of one thing - I have found absolutely no examples of converting time to different time zones. I was able to take the string and convert it to UTC time thinking it would make it easier but now I don't know how to convert them to PST, EST, MST, or CST. I included the function below:
Private Sub timeDifference()
Dim meridiem As String
Dim ante As String = " AM"[code].....
I have a variable called xTemp as string. Its value is B837C. How do I convert it to time?
View 1 RepliesWhat would be the best method of converting an integer to time?
253 would be 00:02:53 123456 would be 12:34:56 1 would be 00:00:01 etc
Can I use convert.todatetime?
I'm working on some code in VB that can get the average time from the speed of button press. I've got the maths done however I'm having a problem converting a TimeSpan declaration into a Integer where it can be divided and made into a average.
Maths for code:
2nd click
click count = 2
average= current time / 1
so current = time click count - 1
[code]....
I have a masked textbox (dd/mm/yyyy hh:mm:ss) and a textbox (hh:mm:ss). I want to calculate the difference of them both and put the result in an other masked textbox (dd/mm/yyyy hh:mm:ss).e.g.13/11/1979 10:00:00 - 15:00:00 = 12/11/1979 19:00:00..I already tried Date.FromOADate(CDbl(dec_time) , where dec_time stands for the difference between first and second part of the equation.
View 3 RepliesI'm having a problem converting a string of letters to a string of numbers. I've tried:
Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0
[Code].....
I have a variable which I called ElapsedTime. I press a button and it displays the time in seconds since clicking the button, into a label . I did it with HTML
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
LblElapsedTime1.Text = ElapsedTime
ElapsedTime = ElapsedTime + 1
End Sub
Private Sub BtnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStart.Click
Timer2.Enabled = True
End Sub
This updates every second a bit like a simple stop watch. Great so far, because I do need the elapsed time (in seconds) for later use in my app. However, whilst elapsed time is being displayed in this label on the screen I want it to be shown in HH:MM:SS format. How can I convert it into a new variable " ElapsedTime2 " so that I can show it in the desired format yet still retain my original " ElapsedTime " variable for later.
I am trying to make a program in visual basic 2010 where the user enters hours minutes and seconds into text boxes and then the program will count down from that until its equal to 0 when a msgbox appears and says its finished. I was converting hour entered, minutes entered, and seconds entered all into seconds and then having a timer subtract 1 from that until its equal to 0. But the problem I'm having is that I want to display the hours, minutes and seconds left in a label to the user in a format of: "hours: 0 minutes: 23 seconds :42" but how to display it in this format.
View 2 RepliesI was directed to update an old VB6 dll to VB .net as we are moving away from COM objects. The dll contains one function that does a bunch of high math calculations. I opened up a new class project in VS 2005, Imported System.Math, and then basically copied the function code from the VB6 project into the new class. When compiling, I made the assemble COM-Visible and also checked the Register for COM Interop in the project properties. I then copied the dll and tlb files to Windows/system32 and tried to register using Regasm.exe.
Even though I'm using the correct version for .Net 2, I still get error RegAsm : error RA0000 : Failed to load 'C:WINDOWSsystem32eagetairmiles.dll' because it is not a valid .NET assembly. When attempting to add a reference to it in my new .Net project, I see it in the COM tab - but in the location it was developed in, and I receive the following error: Converting the type library to a .Net assembly failed. Type library mydllname was exported from a CLR assembly and cannot be re-imported as a CLR assembly.
i have the following setup What i am trying to do is, when the user clicks on the 'calculate age ' button it must calculate the age and display the result based upon the selection in the combobox i.e if 'Days' are selected then it must display in days, if weeks are selected then it must display in weeks..etc
Similarly when the user clicks on the 'convert to date' button , it must subtract the given days(or weeks or months or years) from Todays date and set it to the maskedbox
I'm having an issue with my base conversion program. It seems to have a problem converting from base36 to base10 properly. After debugging all night, I've found that it's one certain function that's not working properly. The function seems to convert every last test number correctly, until I start getting into 11-digit numbers in base36. I have the max digits allowable for base36 set to 12 (so as not to exceed the base10 18-quintillion or so that an unsigned long can hold). I'm starting to think the issue is with VB and not with my code.The function as I've written it is below (DIGITS is a global const string ="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ", and itr is a global integer used throughout the code for iteration):
'-----------------
Public Function FromBase10(ByVal iValue As ULong, ByVal cBase As ULong) As String
Dim remaining As ULong = iValue
[code].....
I have a class that includes a timer :-
public class clsQueryObject
private tmrPoll as new timer
Public sub New()
[code]....
In a vb script program, I have the following code objCommand.Properties("Page Size") = 9999..I have converted most of the vb code over, but this statement gives me a "Property Item is ReadOnly" error. How can I rewrite this line to work in vb.net?
View 2 Repliesi am converting a string to double?i would like to know in advanced whether it would case an error to convert a string to a double. for example if i try to convert "hello" to a double, it would give me an error. is there a way for me to know ahead of time whether converting something will cause an error?
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