Converting String To Date
Jul 20, 2009Can someone please tell me how I would convert a string of "Thu Dec 13 10:00:06 2007" to an actual date?
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SQL Exception On Insert Of Dateandtimepicker.value.date Into Date Datatype: (Conversion Failed When Converting Date And/or Time From Character String)
Apr 8, 2010Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 RepliesConverting A Date-string Into A Date Object?
May 1, 2010I'm using date in the format dd-mm-yyyy and I need to convert a string inthis format to a date type.My string is "18-01-2010" but when I do the conversion using dim TargetDate as date=CDate(TgDstr).where TgDstr is "18-01-2010", the resutant TargetDate, as note in the debugger window, is #1/18/2010# rather than #18/1/2010# which I expected.What change in code should I made to get the desired result?
(P.s. I've checked the current culture with the following line of code:
Dim str As String = CultureInfo.CurrentCulture.Name and get the result 'zh-HK'... and the date-time format I find in the control panel is also in dd-mm-yy format)
Asp.net - Converting Null String To Date?
Jun 24, 2011The user will select an entry in a gridview, which then redirects them to a form that is populated with the data from the selected row (thus making the gridview editable in a more user friendly way). Null values are accepted by the DB and I would like to show null date values as blank (or " ") in the corresponding text boxes. Instead I get the error:
Conversion from type 'DBNull' to type 'Date' is not valid.
Here is my code:
'preceded by connection code
Dim sqlcmd As String = "SELECT * from Master WHERE RecNum = @recnum"
'Dim sqlCmd As New OleDb.OleDbCommand("SELECT * from Master WHERE RecNum = @recnum", connection)
Dim FileCommand3 As New OleDb.OleDbCommand(sqlcmd, connection)
[code]....
Correctly Converting String To Date
Dec 14, 2011I have been unable to correctly convert a string to date. The string is read from a text file and placed into a string, below is a snippet of how the text file is read until the date is field is read:
Dim varOrderNo As String
Dim varDate As String
Static Dim currentrow(20) As String
[Code] .....
I have then tried loads of different ways to convert it to a Date so when I then write it to a SQL Database it enters as a date. The string read from the text file is in the format of 13122011. If I don't try to change it to a Date before writing to SQL it doesn't recognise it as a date and sets the field to 01/01/1900. I have tried and searched loads online and everything i try should work but doesn't.
Dim varDateConvert As Date
varDateConvert = CDate(varDate)
varDateConvert = Convert.ToDateTime(varDate)
varDateConvert = DateTime.Parse(varDate)
All of the above cause my program to drop out / crash at the point of the converting.
I have also tried to format the string to insert the '/' before converting:
txtDate.Text = varDate.Substring(0, 2) & "/" & varDate.Substring(2, 2) & "/" & varDate.Substring(4, 4)
varDateConvert = DateTime.Parse(txtDate.Text, Globalization.CultureInfo.CreateSpecificCulture("en-GB"))
The result for the above is:
From File: 13122011
Substring: 13/12/2011
Convert: 12/13/2011 - Crashes here
VS 2008 - Converting String To Date
Jan 15, 2010I use following codes to to convert string to date. In messagebox it displays correct date with format but in textbox it displays only #12:00:00 AM #. How to send date to textbox1 from variable mydate.
Dim mydate As Date
Dim dateString = "31/12/2009"
Dim formats As String() = {"dd/MM/yyyy", "dd/MM/yyyy"}
Dim dateObject As DateTime = DateTime.ParseExact(dateString, formats, System.Globalization.CultureInfo.InvariantCulture, Globalization.DateTimeStyles.NoCurrentDateDefault)
MessageBox.Show(dateObject.ToString("dd/MM/yyyy"))
Me.TextBox1.Text = mydate
Asp.net - Converting Date String To DateTime Format .net?
Dec 1, 2010I have this example and it gives me exception "Conversion from string x to dateTime is invalid"
here is my method to validate Datetime. Example Date string : "27/03/1985"
Public Function validateDateColumn(ByRef FieldName As String) As Boolean
[Code]...
Converting An Empty String To A Date, And Then Back?
Jul 20, 2010I'm trying to do some validation testing in VB.NET. If Entity.WeekEndDate.ToString = String.Empty Then ErrorList.Add(New cValidationError("id", "Incorrect Week End Date"))
Where WeekEndDate is of type Date. When I originally build the object, how can I insert a value into WeekEndDate that will generate an empty string(ie. "") when converted from a Date to a String?
Export To Excel Converting String To Date?
Mar 23, 2012I am pulling two fields and putting them together with a "-". When I export to excel it seems to think that the string is a date and converts it from 11-11 to 11-Nov. I can't seem to figure out how to fix this.I am exporting a gridview into excel. This asp.net using .net 3.5 and vb.net within VS 2008.
Response.Clear()
Response.Buffer = True
'grab filename from filename box
[code].....
Conversion Failed When Converting A Date/time From A String?
Aug 10, 2009when 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].....
Conversion Failed When Converting Date And / Or Time Character String?
Sep 28, 2011When 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 RepliesConversion Failed When Converting Date And/or Time From Character String?
Jan 1, 2011cmd.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.
Conversion Failed When Converting Date Time From Character String?
Jun 30, 2011I 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.
Converting Date String Starts With Days To DateTime Format?
Dec 1, 2010I Have this date "27/03/1985" and because it starts with days i can't convert it to datetime.
View 2 RepliesError : Conversion Failed When Converting Date And/or Time From Character String
Mar 27, 2011The 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.
Getting An Error That Says Conversion Failed When Converting Date Or Time From Character String?
Mar 27, 2012Dim 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 ??
Ensure That Conversion Of A Date To A String And A String To A Date Will Give The Same Date Format?
Jan 16, 2012how I can ensure that conversion of a date to a string and a string to a date will give me the same date format.
For example:
Code:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim d As Date = Date.Now
[code].....
I'm actually only interested in the date part as the label text shows so f is more than I want.But also, the day and month are reversed.
Asp.net - Date.TryParse For Decimal Converting Date
Jun 16, 2010I have string that contains "1.3" and I am checking with Date.TryParse method. It automatically converting into "1/3/2010". How to handle this?
View 1 RepliesConverting Date And Time Format To Date?
May 3, 2010I have a problem. I'm making a alarm clock and I need a way of converting a "dd/MM/yyyy HH:mm:ss" format into a date time format. This means I'll be able to compare the dates in a listbox using the for each function, to the current date and see whever it has passed and therfore the alarm should be deleted. It is currently in a string form so I can't use < and > to compare it to the current date as that is in a date form. I've tried using CDate but it doesn't work as it only will convert these formats:
"August 12, 2004", "2:07:30 PM" and "August 12, 2004 2:07:30 PM"
Converting Gregorian Date To Shamsi Date?
Jun 10, 2009Im trying to write this converter with VB.NET...
View 1 RepliesConverting Julian Date To Regular Date
Apr 26, 2010This should be really simple and I figured out how to do it in VBA but it's different in .NET. I have a 3 digit Julian date that I would like converted to a regular date (Gregorian). So if the number is 91, then that means April 1st (non-leap year) and if it's 304 then that means October 31st (also non-leap year). In VBA I was using the Day and Month functions to help me get an output to make it mm/dd format.
[Code]...
Asp.net - Converting Date To Day Of Week?
Mar 21, 2010is there any ready to go solution within the microsoft framework, regarding conversion of date to day?For example, i would like to convert this string 21/03/2010 (dd/mm/yyyy) to Sunday?
View 5 RepliesConverting Date To Sql Format
Mar 8, 2011i am trying to retrieve data from sql server into vb.net but i have some issues with date/time the date format in sql like '2011-03-08 23: 59: 59. 999'and in visual basic i am using DateTimePicker as custom format like 'yyyy-MM-dd'and the query that i wrote it in vb.net to retrieve data from sql is:select * from TBL where TBL .t_date between CONVERT(datetime,''+'" + DT1.Value + "'+'', 101) and CONVERT(datetime,''+'" + DT2.Value + "'+'', 101)[code]how i can let the user insert the items 'A','BB','CC' between IN brackets by choosing the items from combobox?
View 2 RepliesConverting Text Box To Date?
Oct 20, 2011I have a text box in the format of yyyymmdd ie. "20110101" that is derived from an existing access database and want to convert it to mm/dd/yy and place it in a separate text box.
View 11 RepliesDate Not Converting Correctly In .net?
Jun 10, 2012It seems like I keep having problems with dates. I am using the following code:
Dim LocalDateCultureProvider As New CultureInfo(CultureInfo.CurrentCulture.ToString)
Dim CurrentDate As DateTime = Convert.ToDateTime(System.DateTime.Now.ToString("dd/MM/yyyy"), System.Globalization.CultureInfo.InvariantCulture)
ExpiryDate = DateTime.ParseExact(strDate, "dd/MM/yyyy", LocalDateCultureProvider)
If DateTime.Compare(ExpiryDate, CurrentDate) < 0 Then
MsgBox("This file has expired.")
[Code]...
Converting Daylight-savings Date?
Jun 30, 2011I have a string "2011-06-30 09:55 EDT" that uses the US daylight savings format. Date.Parse cannot convert this because this is a non-standard format (EDT instead of EST). Is there a way to convert this string using Parse?
View 3 RepliesConverting Seconds To Date / Time
Apr 3, 2010I 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 RepliesConverting The Format Of A Date In .NET 2008?
Apr 24, 2009I'm having some trouble converting the format of a date in .NET 2008...
Dim currMonth As Date
currMonth = Format(Now, "mmm")
From this code, I need to extract today's date in the format of "mmm" (so it should return.. "Apr")This worked in vb6 but not in .Net, I keep getting some sort of conversion error.. I looked at using theformatdatetime option but it doesnt have the format that I need... only short date/long date...that kind of thing.
Homework - .net Converting Week To Date?
Jun 29, 2011I am developing an ASPX VB.NET file. My assignment is to convert an integer representing week of the year into that end date. For example, if user selects Week 4 for 2011, I want to get date = 1/22/11. How do I do this in VB.NET?
View 2 RepliesVS 2005 Converting Between Numbers And Date?
Sep 21, 2010i 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