Comparing Date : Conversion From String "23/06/2011" To Type 'Date' Is Not Valid

Mar 25, 2011

when i am trying this Date.Compare(Format(DateTimePicker1.Value.Date, "dd/MM/yyyy"), Convert.ToDateTime(dr(1))) < 0 it gives an error message as "Conversion from string "23/06/2011" to type 'Date' is not valid."where dr(1) is database field in text format as 29/3/2011 (dd/mm/yyyy) .

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CDate Function Error In IIS 6.0 "Conversion From String "11 Jul 2011 21:10:27" To Type 'Date' Is Not Valid"?

Jan 10, 2012

We are running .NET 2.0 ASMX web services on Windows 2003 server on IIS 6.0. We have migrated a legacy VB 6.0 application to .NET 2.0 application using VB.NET. CDATE function is used at many places and we did not replace that with .NET equivalent date functions. After migration, code was working fine for many years.Recently, we have started encountering issues on our production servers where the below code fails:

CDATE("11 Jul 2011 21:10:27")

Error: Conversion from string "11 Jul 2011 21:10:27" to type 'Date' is not valid."If we perform an iisreset, the same code starts working fine. Could this be due to some recent patch for Windows server/ .NET patch?

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Date Format - It Gives Me Error As "Cast From String "28/01/2011" To Type 'Date' Is Not Valid"?

Nov 30, 2010

conversion of date

if i used -- Date.parse("28/01/2011")

it gives me error as "String was not recognized as a valid DateTime."

so then i modify above code as -- CDate("28/01/2011").it gives me error as "Cast from string "28/01/2011" to type 'Date' is not valid." I used convert.todatetime also date.parseexact but nothing is working..

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VS 2008 Date Format - Conversion From String To Type Not Valid

Sep 13, 2010

I want to to make date format dd/mm/yyyy with access 2003
Dim strdate As string="22/09/2010"
Dim dd1 As New Date
dd1= strdate

I get : Conversion from string "22/09/2010" to type 'Date' is not valid.

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Date After Clean Install Error "Conversion From String "13/8/2009" To Type Date Is Not Valid"

Aug 15, 2009

I did a clean install and tried to get the project running again. The code ... AlteredDate = SelectedDay & "/" & SelectedMonth & "/" & SelectedYear would always work defaulting to DD/MM/YYYY before the clean install. The program now runs an error "Conversion from string "13/8/2009" to type Date is not valid.. How do I change the default back to DD MM YYYY or format it to that?

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Error : Conversion From String "LastRunEnd" To Type 'Date' Is Not Valid

Jul 9, 2009

<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:1; mso-generic-font-family:roman; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:0 0 0 0 0 0;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-

[code]...

Error :Conversion from string "LastRunEnd" to type 'Date' is not valid.

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Asp.net - Conversion From String "31/03/2012" To Type 'Date' Is Not Valid

Oct 30, 2011

My web app is running perfectly in asp vb.net editor. But when i run my web app through IIS7 then i get this error. What am i missing in configuring IIS7?

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Conversion From String "11/07/2010 13:00:00" To Type 'Date' Is Not Valid?

Jul 12, 2010

I am getting the error: Conversion from string "11/07/2010 13:00:00" to type 'Date' is not valid. In my ASP.NET code when run on the web server. The date is valid and it can't be a US format issue because either way it would be valid. I have tested it and it seems to error when the time is > 12:00 (ie. a 24hour like 13:00 or 21:00).

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Error - Conversion From String "" To Type 'Date' Is Not Valid

Sep 3, 2010

When I open by form and close it when txtprojend.text is empty I receive unhandled exceptional error in the code below; How can ignore and never receive the exceptional unhandled problem. Conversion from string "" to type 'Date' is not valid.

Dim datProjEnd As Date = CDate(txtprojend.Text)

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Error - Conversion From String "AMI" To Type 'Date' Is Not Valid

Jan 6, 2010

The function below gives the error:Conversion from string "AMI" to type 'Date' is not valid.InvalidCastException was unhandled.

Public Shared Function LoadPatHist() As List(Of PatHist)
Dim PatHist As New List(Of PatHist)
Using conn As New System.Data.SqlClient.SqlConnection()
conn.ConnectionString = ConnectionString

[code]....

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Error: Conversion From String "" To Type 'Date' Is Not Valid

Apr 14, 2009

I received this error when trying to launch a button. After entering a date of 01/02/2009 it returned this error: "Conversion from string "" to type 'Date' is not valid." My code is as follows:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Me.txtVerifiedInfo.Text = Request.Item("txtFirstName") & _
Chr(13) & Chr(10) & Request.Item("txtLastName") & _

[code]....

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Conversion From String "AMI" To Type 'Date' Is Not Valid?

Jun 8, 2010

The function below gives the error:

Conversion from string "AMI" to type 'Date' is not valid.

InvalidCastException was unhandled.

[Code]....

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Forms :: Error - Conversion From Type 'DBNull' To Type 'Date' Is Not Valid

Oct 10, 2010

I'm getting the error "Conversion from type 'DBNull' to type 'Date' is not valid."here's the line generating the error.

dtReady.Value = dSet.Tables("Db").Rows(Inc).Item("Fixed_Date")

I'm using a date/time picker control and sending the db value to it. I know that the value is null, but I don't understand why the Picker can't be blank. Is there a way to let it be blank? Or should I set up a way to check for nulls and assign today's date or something just in case?

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VS 2010 : Conversion From Type 'DBNull' To Type 'Date' Is Not Valid

Dec 30, 2011

When I close my form without saving I want to check if the data on my form has changed since the last time I saved the data.This peace of code, which I included at the bottom always worked fine.Except when I compade a DateTimePicker with a null value in the db.Than I get the error "Conversion from type 'DBNull' to type 'Date' is not valid."Probably on this peace of

Me.dtpVrijeDatum01.Value.Date <> CDate(reader("VrijDatumVeld01")).Date Or
Me.dtpVrijeDatum02.Value.Date <> CDate(reader("VrijDatumVeld02")).Date Or
Me.dtpVrijeDatum03.Value.Date <> CDate(reader("VrijDatumVeld03")).Date Or
Me.dtpVrijeDatum04.Value.Date <> CDate(reader("VrijDatumVeld04")).Date Or
Me.dtpVrijeDatum05.Value.Date <> CDate(reader("VrijDatumVeld05")).Date Or

The total code to check the changes is:

Private Sub CheckForChanges()
LeesCheckboxWaarde(Me.chkFacAdrIsBezAdr, intCheckFacAdresIsBez)
LeesCheckboxWaarde(Me.chkPosAdrIsBezAdr, intCheckPosAdresIsBez)

[code]....

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VS 2010 Conversion From Type 'MySqlDateTime' To Type 'Date' Is Not Valid?

Apr 7, 2012

I'm storing dates intoa table like:vb.net "INSERT INTO myTable (datum) VALUES ('" & Convert.ToDateTime(dgvrow.Cells(0).Value).ToString("yyyy/MM/dd hh:mm:ss") & "'" & ")", conn) This works perfectly. After storing the dates I need to load /show them into a MonthCalendar. This is where the error occurs.

[Code]...

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.net - Conversion From Type 'DBNull' To Type 'Date' Is Not Valid

Jun 22, 2011

I have a query in my DAL that results 1 item, a date. It's either a date or null. But I get an error when the value is null. Conversion from type 'DBNull' to type 'Date' is not valid. Query

[Code]...

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Conversion From Type 'DBNull' To Type 'Date' Is Not Valid

Jul 14, 2011

I am getting this exception from the following VB.NET code for only certain months: System. InvalidCastException: Conversion from type 'DBNull' to type 'Date' is not valid.It happens on the line:if CDate(dRow("CompleteDate")).ToString("d") = arrWeekYear(i, 1).ToString("d") Then.If I understand this correctly, then the problem is I am trying to compare some NULL values for CompleteDate to a non-NULL value.However for some of the more recent records, it does not. But I am able to get output from the T-SQL query with same date range and there are no errors; it runs quickly also. And I examined this T-SQL query for both "Date_ Completed" and "Review_Date" NULL values, but either way,"CompleteDate" was always = NON-Null value.So I do not understand how this is happening.[code]When I add this line above the error-causing line above, my report times out for these months.If Not dRow("CompleteDate") Is System.DBNull.Value Then

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Conversion From String To Date Not Valid?

Aug 2, 2010

I have a string in the format of 20100730 which i need to convert to UK format of 30/07/2010.

When i try to set 20100730 as a date it says it is not valid. Is there another way i can do this?

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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, 2010

Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?

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VS 2008 Conversion From String To 'date' Is Not Valid

Dec 10, 2009

i've done a search on this error n found no match so i decided to create a new thread.this part of the program is suppose to get the date interval of dd(due date) and dr(date return) n charge the members accordingly.the program opens normally but when i go thru the records i have in my database, conversion from string "" to 'date' is not valid pops up.[code]

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Ensure That Conversion Of A Date To A String And A String To A Date Will Give The Same Date Format?

Jan 16, 2012

how 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.

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Find The Closest Valid Date To One Given As An Invalid Date String?

Aug 18, 2010

So there's this accounting package at my client that spits out text-based reports with invalid dates, like February 31st or September 31st.The reports are formatted with spaces and mono-spaced fonts. The data that gets parsed out are fed into a more formal local SSRS report, and that's about all you need to know.

What I am interested in fixing is the situation where a date is invalid and can't be converted into a DateTime struct. The date format from the report is "MMM-dd-yy" (e.g. "Feb-30-10"). The date strings need to be fixed before being shown in the formal report. I've seen this done two ways in my time as a developer, and I want to come up with a cleverer way of doing it (if there isn't a built-in way I don't know about).The first bad method (I can't believe I'm even showing you!):

Dim month As Integer = <Parse out the month from the bad date string>
Dim day As Integer = <Parse out the day from the bad date string>
Dim year As Integer = <Parse out the year from the bad date string>
Dim validDate As DateTime

[code]....

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Data Type Is A Nullable Date That Returns A String Value If Date Was Supplied?

Mar 11, 2010

I am currently working on a custom data type, and wanted to implement a = operator.

I data type is a nullable date that returns a string value if date was supplied.

I want to allow the variable to be set like this

Dim nd as New NullableDate nd = Today Does anyone know how this can be done, or can anyone point me in the right direction?

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Conversion Error On Line 5 Stating 'Conversion From String 'S' To Type 'Double' Is Not Valid

Apr 8, 2009

a user will enter a number, n, which ranges from 1 to 30. they will also enter a "P" or an "S" (sum or product). depending on which was selected, it will calculate the sum or product of the numbers from 1 to n.i'm having a conversion error on line 5 stating "Conversion from string "S" to type 'Double' is not valid." [code]

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DB/Reporting :: Conversion From Type DBnull To Type String Is Not Valid When Inserting A Record

Mar 22, 2010

I'm trying to add a new record to my database but i keep getting the message - "conversion from type DBnull to type string is not valid". I think its something to do with the Employee ID when VB attempts to save it to the database my code is below

Imports System.Data.OleDb
Public Class Add
Private Sub DisplayRow()

[Code]....

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Error: Microsoft.VisualBasic: Conversion From Type 'DataRowView' To Type 'String' Is Not Valid

May 25, 2011

I now have SQL Parameters set up and I'm using them to save/delete/add my data. This all works well, except when it's trying to save a combobox to the datatable it appears with the error above.Majority of my comboboxes have datasources, and the valuemembers of these are the actual list items, not the ID's of the list items.I'm not sure why this error could be happening, I'm fairly sure I've connected everything to the binding source correctly; I've checked it a few times.Does anybody know what the cause of this could be? I've looked around a bit and I haven't found much

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IDE :: System.InvalidCastException: Conversion From Type 'DBNull' To Type 'String' Is Not Valid

May 16, 2007

I have these errors when creating my website?

Error 1Server Error in '/ Application. -------------------------------------------------------------------------------- Conversion from type 'DBNull' to type 'String' is not valid. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidCastException: Conversion from type 'DBNull' to type 'String' is not valid. Source Error: Line 64:
Line 65:

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VS 2008 : Error: Conversion From Type 'DBNull' To Type 'String' Is Not Valid

Jun 15, 2009

how can I solve this error without having to fill all of my fields. Some of the fields in my database are Nulls and some have records.

Error: Conversion from type 'DBNull' to type 'String' is not valid.

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Asp.net - Convert Date 4/7/2011 12:00:00 AM To 7-Apr-2011?

Mar 21, 2011

I have a datetime datatype field in mssql2005 database ...

which retrieves the date in gridview as .. 4/7/2011 12:00:00 AM

but i want it retrieve date as 7-Apr-2011

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Error : Conversion From Type 'DataGridViewTextBoxCell' To Type 'String' Is Not Valid

May 2, 2010

I am getting the error "Conversion from type 'DataGridViewTextBoxCell' to type 'String' is not valid." When trying to display a cell from DGV in a listbox.I have my variable for the cell reference as follows:

Dim a As Object
a = DataGridView1(4,1)

To insert it in the listbox as follows:

lstLetter.Items.Add(String.Format(a))

I tried:

lstLetter.Items.Add(a)

This will not actually display the entry inside the referenced cell, it shows this in my listbox instead:

DataGridView TextBoxCell { ColumnIndex=4, RowIndex=1 }

how I need to convert this to display.

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