Error:When MySqlCommandBuilder.ReturnGeneratedIdentifiers Is True, MySqlCommand.UpdatedRowSource Must Be Set To None
Jun 1, 2009
I am using the following
Dim cmC As New MySqlCommand()
Dim daC As New MySqlDataAdapter()
Private Sub btnClientSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClientSave.Click
[code].....
When I add 1 client it works fine, but when I try adding another I get the following error:
When MySqlCommandBuilder.ReturnGeneratedIdentifiers is true, MySqlCommand.UpdatedRowSource must be set to None.
I am having a problem getting the mySqlCommandBuilder to work. It does not appear that it is creating the Update/Insert/Delete commands. I am using Visual Basic 2008 Express Edition.When I run the code in debug and set a breakpoint at the "myDataAdapter.Update(myDataSet, myTableName)" line and use "Watch" to examine the "myadapter" parameters, the "UpdateCommand", "InsertCommand" and "DeleteCommand" show as "Nothing". The "SelectCommand" shows the correct "SELECT" statement.
I have a pretty standard MySQL-query in my winform application like this:SELECT * FROM tblTable WHERE tblTable.tableID = " & variable..One of the fields is a foreign key. And when I try to add a record to my datagridview I get the error:Cannot add or update a child row: a foreign key constraint fails..Can't MySQLCommandBuilder make INSERT-commands with tables containing foreign keys?
i am using VS 2008 and just started to work with XAML and WPF. while opening in page(.xaml) in design mode i'm getting the error like this "Only TrueType fonts are supported and this is not a TrueType font".
When I test it on my mysql query browser, it works well.
Now, I want to execute it in VB with mysqlCommand. of course @rownum is defined as a parameter and waiting for its value. How can I execute that query in VB?
I create a dictionary in a function which I pass to the function executing the sproc. Dim PParamDict As New Dictionary(Of String, String) PParamDict.Add("sname", name) PParamDict.Add("sdescription", description) PParamDict.Add("sLoggedInID", LoggedInID) PParamDict.Add("sCompanyID", CompanyID)
The dictionary gets passed to the function PParamDict -> ParameterDict Dim dbComm As New MySqlCommand(ProcedureName, PConnection) Dim pair As KeyValuePair(Of String, String) For Each pair In ParameterDict dbComm.Parameters.AddWithValue(pair.Key, pair.Value) [Code] .....
This works as long as the PParamDict.Add statements are in that order. If they're in a different order they get passed as they come in. This is the most ridiculous thing I've ever seen, I'm passing the keys to the MySqlCommand which are defined letter for letter in the sproc.
I am trying to build an error handler for my desktop application. The code Is in the class ZipCM.ErrorManager listed below.What I am finding is that the outputted file is not giving me the correct info for the StackTrace.Here is how I am trying to use it:
Try '... Some stuff here! Catch ex As Exception Dim objErr As New ZipCM.ErrorManager
[code]....
What is happenning is the .GetFileLineNumber() is getting the line number from 'objErr.Stack = New System.Diagnostics.StackTrace(True)' inside my Try..Catch block. In fact, it's the exact line number that is on. how I can catch the real line number the error is occuring on?
I'm having a problem with Dim query As New MySqlCommand("Select count(*)....") I would like to take the variable query and do an If query <> 1 Then statement on it. Is this possible or is there a completely other way to go about this comparing the contents of a MySQL select statement. I'm rather new to Visual Basic.
I try to use a special font in my programm xxxxxx.ttf (true type font)and i got this error "only tryetype fonts are supported .this is not a true type font "i used it before with same programm but since i installed a very old version of xp i got the error.
Dim cmd As New MySqlCommand cmd.CommandText = "REPLACE INTO `customer` VALUES( ?customerID, ?firstName, ?lastName)" With cmd.Parameters
[code].....
I have a class that handles execution of MySqlCommands and I'd like to have it log every query to a file. I can retrieve the query/command being executed with:
cmd.CommandText
but that just returns the original CommandText with the parameters (?customerID, ?firstName, etc.) and not the actual substituted values added by the AddWithValue functions. How can I find out the actual "final" query that was executed?
I have written a program that if all if statements are true then it closes out with me.close() without displaying the form. If a if statement is false, then the form shows with some text as to why it failed.The program works perfectly....until I change the form setting "top most" to true, if the if statements are true, instead of the form closing as it should, I receive ObjectDisposedException was unhandled Cannot access a disposed object. Object name: 'Form1'.
is a variable called "Incognito" that is class-wide that is a boolean.My question is that is there a form-wide variable form that can like communicate with different forms. So if a variable in form1 is "True" than, how can you make a variable in form2 turns to "True" too?
I wanted to create my own type that acts like the Boolean type, except I wanted to use Yes and No instead of True and False.I kind of got close but it wasnt exactly what i was going for here's what i have:
[code]...
so i have to use an integer when i dim it like:dim b as MyBool = 1 then when you look at it in the watch window b = {Yes} so i could settle for that, but with a boolean you can do this:dim b as Boolean without setting it to anything it defaults to False mine however, is Nothing. 2 things: 1. How can i get mine to default to No 2. How can i make it work like this: dim b as MyBool = Yes instead of having to use the integer this is not a requirement for anything I just wanted to know how to do it
This is probably a basic question, but I have never used this syntax before. Can someone tell me in detail how this expression evaluates to true? [Assuming IsOdd is a boolean type].
The expression 3>6 AndAlso 7>4 evaluates to A. True B. False The expression 4>6 OrElse 10<2*6 evaluates to A. True B. False The expression 7>=3+4 OrElse 6<4 AndAlso 2<5 evaluates to A. True B. False
The VB code below assigns True value assign to the function. But when I convert to C#, I am getting an error like we can not assign True to a method. How can I assign true to the method in C#. This is my VB code:
Private Function KeyOK(ByVal sKey As String) As Boolea
I have an many class with BeginDate and EndDate properties, I want to build generic method that return one object as List of the same type but with BeginDate=EndDate. [Code], but I faced a problem that Type.IsGenericTypeDefinition of my classes is false. How can I set it to true?
I've got this function which converts wav files to mp3. I call this from my button_click handle. The thing is, when the conversion is started, the rest of the code in the button_click handler continue, while the conversion is happening in a different thread. Now, I need the rest of the code in the button_click handle so continue to try until a boolean is true, so that I know that the conversion is done before the rest of the code continues. I've tried using Do While but it didn't seem to do the trick. Perhaps it's just me though..
I'm trying to make a textbox at runtime, Dim t as Control
t = New Textbox t.Multiline = True t.Size = New Size(300,120) Form1.Controls.Add(t)
I found out that you can only size a textbox when Multiline is set true. And that's the problem. When I use t.Mutiline = true I get the error " 'multiline' is not a member of 'system.windows.forms.control' "
I've searched the internet for hours without result.
I have the function below which I call onload, I want to be able to check the checkbox (chkactive) if the ProjectStatus is set to True, how can I do that please.[code]
I know I'm being quite pedantic here. But, what is the right way to get a true 50/50-chance with a generated random number? Say, to simulate the flip of a coin. [code] I know this difference is close to nothing, but I'm doing some calculations on bell curves, in such a way that it requires true 50/50-chance.
I am using a TextBox for DoDrop right now but I noticed AllowDrop for Form1 my question is how would I need to go about doing away with the TextBox and just use Form1 drop to assign a file path?
I have a form which creates a new school talk appointment. In my database, there is a column called 'active' which is boolean (true or false). Then everytime I creates a new school talk appointment and added it to database, the active is automatically set to 'false'. how to make it set to 'true' instead?
I have a Listview listing multiple files with the following code
Dim index As Int16 = 0 For Each Item As String In NewFilenames ListView2.Items.Add(Item.Substring(Item.LastIndexOf("") + 1), index) index = index + 1 Next
I need to set all the checkboxes to true somewhere in this statement.
I am writing the code in the class to create the strings. I want the value to returns as true if the strings in the class are matched with two numbers or more, but if the if the strings in the class are not matched with first two numbers or not then returns the value as false.[code]....
