SQL Update Statement - DBNull Error With Replace?
Apr 22, 2012
I am creating a form that is able to update data in SQL server after selecting an MS Access file (.mdb). I am having an issue where the data has a single quote ('). I found out that the solution was to use Replace() - to replace the single quote with two single quotes - Replace(string, "'", "''").Now, for some reason, I am getting an error "Conversion from type DBNull to type String is not valid." Here is the code.
cmd = New SqlCommand("Update Child Set " & _
"TopLevelProject = '" & row("TopLevelProject") & "' ," & _
[code].....
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Nov 15, 2011
update statement, i am trying to update a row within a access 2007 database here is my code.
[Code]...
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Sep 29, 2009
So I'm importing Excel data using ADO into a DataTable then pushing out to an Access DB. A couple of the Excel columns have several blank cells that I would like to change to a zero before pushing it out. How can I check/change the DT null values to zero? I've done some searching but was wondering if I could do it without a loop.
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May 17, 2012
im new with vb .net and im currently developing a simple information system for an agency .. im almost done with it but there seem to be a problem with my update statement for the change password code here's my code..,[code]
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Apr 27, 2010
the error i get while executing the code below in OleDb
Try
con.Open()
Dim cmd As New OleDbCommand("Select * from customer", con)
cmd.CommandText = " update customer set hr =@hr,min =@min "
cmd.Parameters.AddWithValue("@hr", ComboBoxHr.SelectedIndex.ToString())
cmd.Parameters.AddWithValue("@min", ComboBoxMin.SelectedIndex.ToString())
cmd.ExecuteNonQuery()
[Code]...
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Mar 12, 2010
I'm getting a strange syntax error when I run this in VB[code]....
The Username is checked before getting to this part and is definitly in the db. It gives an exception saying syntax error in update statement.
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Nov 29, 2011
When run my code, I get this error when I try updeting my database:
"Syntax error in UPDATE statement."
Here is my code snippet.[code]...
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Feb 28, 2011
da.InsertCommand = cmdBuild.GetInsertCommand(True)
da.UpdateCommand = cmdBuild.GetUpdateCommand(True)
da.DeleteCommand = cmdBuild.GetDeleteCommand(True)
[code].....
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Oct 7, 2010
I want to update the table in access database the code is following please guide me i am new with vb 2008.da.fill(ds) becomes yellow when i see the detail wrong sql statment.but in java same statement work correctly.
Private Sub Changebtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Changebtn.Click
If TextBox3.Text = TextBox4.Text Then
[code].....
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Aug 9, 2010
When i try to save the changes to my database i get the following error. (code is below)
System.Data.OleDb.OleDbException was unhandled
ErrorCode=-2147217900
Message="Syntax error in UPDATE statement."
Source="Microsoft JET Database Engine"
StackTrace:
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr)
at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)
[Code]...
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Jun 5, 2011
A concurrency violation error? It happens on this statement:
CODE:
It thinks I'm using a key value of 1 when the actual value is really 1218. I'm using a command builder. The attachments show the value of the key value and the value of the update text values. By the way, I can insert data but not update it.
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Oct 5, 2010
I try to update my data into Access using VB but I got the following error "Syntax error in UPDATE statement." [code]
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Sep 17, 2009
I build a command.text that looks like this.
UPDATE a_list Set NOTE = 'This is text in a memo type field.' where index = 2;
I get the error --- Syntax error in UPDATE statement.
The provider is jet and the table is in an ACCESS MDB. I get the same thing on a DBF file.
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Oct 1, 2011
SQL = "UPDATE tblTenant SET Fname='" + Trim(txtFName.Text) + "', Lname='" + Trim(txtLName.Text) + "', Bdate='" + Trim(txtBday.Text) + "', Gender='" + gen + "', ContactNum='" + Trim(txtCn.Text) + "', Add='" + Trim(txtAddress.Text) + "', RoomNum=" +
[code].....
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Aug 19, 2009
[code]
May i know what is going wrong to my Update statement.
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Apr 21, 2012
I have this sql statement to update a column in access db from vb but when I run the program it shows that there is a syntax error in the statement. [code]...
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Mar 10, 2010
In this example, an error is raised if either row.FirstName or row.LastName are NULL.
How do I rewrite the Select clause, to convert a DBNull value to a blank string ""?
Dim query = From row As myDataSet.myDataRow in myDataSet.Tables("MyData") _
Select row.FirstName, row.LastName
NOTE: Since the DataSet is strongly-typed. I can use row.isFirstNameNull(), but IIF(row.isFirstNameNull(), "", row.FirstName) will not work since all parameters are referenced.
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Mar 29, 2012
I'm getting the error "Syntax error in UPDATE statement." When I run it and place something in the txtPass box. However I have checked this everywhere and cant seem to find to find the problem. Everything else works fine except for that part.
Public Class Form6 Private Sub btnView_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnView.Click
[Code]...
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Aug 30, 2011
Syntax error in UPDATE statement for MSAccess 2002/2003
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Feb 12, 2011
I am suddenly getting an into statement error and can not seem to figure out why When I try to update a .csv file I get: syntax erroe in INSERT INTO statement When I try an update a textfile I get: The INSERT INTO statement contains the following unknown field name: 'SellingPrice'. Make sure you have typed the name correctly, and try the operation again.
[Code]....
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Jul 9, 2010
Dim cBuilder
As
New OleDb.OleDbCommandBuilder(dAdapter)
Dim dsNewRow
As DataRow
[CODE].....
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Nov 3, 2010
I am trying to work programmatically with a dataset. The tableAdapter was created by dragging and dropping the dataset on my form, and then deleting the binding navigator and dataviewgrid. The problem I am having is when I am trying to delete a record that is DBNull. The dataset.delete( ) call creates fields for each of the fields, along with their data type (say Description as String). but I get an error whenever the field has a DBNull value.
CourseTableAdapter.Delete(DBDataSet.Course.Item(1).CourseID, DBDataSet.Course.Item(1).CourseDescription)
The error is Throw New Global.System.Data.StrongTypingException("The value for column 'Description' in table 'Course' is DBNull."I do have Option Strict On, but the problem exists even if I turn it off.
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Jan 4, 2011
I am using VISUAL BASIC 2010, SQL Server 2008. I need to update a Table with SQlDbType Varbinary. Just for sake of Murphy loving me I gave it Varbinary(100) - while max. field lenght is 20 Non Ascii Characters on the UI Side.User is changing data in a form, data gets encrypted (into a Byte Array) then sent to the BL of the program, the business logic talks to SQL Server and fields in the Table are updated nicely with new binary values.
A problem arises however with a field that is allowed NULL values in the data table. I can retrieve NULL values from the Database and assign them the "Nothing" value. (User Interface shows a nice blank field). Once the user however changes that empty field(containing "Nothing" as value) with any data then my cmdSql.ExecuteNonquery reports no changes. (rowsaffected = 0)
I strongly suspect that I am making a mistake in the parameters of the SQlCommand of the OldFullname value, but as I said I am staring myself blind. Please review my code below and tell me where I am making that mistake...
FYI: OldFullname can't be "Nothing", and its current field is SQL NULL. All fields (except UserId) are Varbinary. Update succeeds as long as OldFullname SQL field contains data - only not when it is NULL. I don't want to set a standard value on the column (NULL or such).
Public Function SaveToDatabase(ByVal OldUser As blProgramAccess.userEncrypted, ByVal NewUser As blProgramAccess.userEncrypted) As Boolean
Dim bSaved As Boolean[code]....
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Feb 17, 2009
when the program is already save the data and when the process is on updating the dataset it give me error say's"Update requires a valid UpdateCommand when passed DataRow collection with modified rows."The error occur at the line in bold letter in the codes below..
Dim classgroup As String
classgroup = ""
If Me.ClassComboBox.Text = "Key Project" Then
[code].....
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Oct 14, 2011
SQL = "SELECT * FROM [" & WorkHistory_tablename & "] ORDER BY DateOfWork asc"
ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=" & My.Settings.AppPath & "" & gWorkingCentre & "_FCLManager2011_Students.mdb"
[code].....
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Apr 22, 2009
I'm currently having a problem with my update statement. It's the last thing that I need to do for my program before I can move on and finally get on with the writeup side of the coursework. Here's my update statement.
("UPDATE Stock SET EmpID = " + ItemID.Text + ", ItemName ='" + ItemName.Text + "', ItemDescription + '" + ItemDesc.Text + ", ItemType ='" + ItemType.Text + ", ItemPrice ='" + ItemPrice.Text + ", NumberInStock ='" + NumberInStock.Text + "' WHERE ItemID = " +
[code].....
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Apr 1, 2012
Syntax error (missing operator) in query expression '''system time'''.this is the error that appears
this is my code:
Dim sqlCmd As String
Dim x As Date
x = Format(Now(), "General Date")
[code].....
the fields in the tables are all text fields.is there any way to fix this error? perhaps it is in my query but i really cant find a solution.is there an alternative to get what i want my program to do?it is basically entering an ID number and finding the record with the same idnumber and putting the system time on the timein field for that record.
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Mar 15, 2009
I have finally been dragged kicking and screaming into the 21st Century and I'm learning VB.NET
[Code]....
I get a "Syntax error in INSERT INTO statement" on the da.update line. The bulk of the code is copied from a working section of the program, I have just added the "newrow" stuff. I am pretty confident I have the names of all the fields correct.
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Nov 9, 2011
I am receiving this error on this line
ctl.Value = CType(Me.Value, DateTime)
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Oct 7, 2009
Is it possible to replace the calculate button with a statement so that the percent complete automatically calculates when a box is checked or the text box is modified?
I have not been able to find anything except a 'do loop' that even comes close.
Public Class Form1
Dim C1, C2, C3, C4, Tb, Tb1 As Decimal
Dim PctCmp As Decimal = C1 + C2 + C3 + C4 + Tb
[Code].....
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