Operator '=' Is Not Defined For Type 'Char' And Type 'Boolean'

Apr 16, 2009

In my application when i click the button i'm getting this" Operator '=' is not defined for type 'Char' and type 'Boolean'." But when i test it locally there is no problem at all!

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Error: Operator '=' Is Not Defined For Type 'FileInfo' And Type 'Boolean'

Aug 19, 2010

This is my

[Code]...

This is my error: Operator '=' is not defined for type 'FileInfo' and type 'Boolean'.

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Operator Not Defined For Type DBNull And Boolean

Jul 13, 2009

I have this little problem :Operator '=' is not defined for type 'DBNull' and type 'Boolean'. This the code:
For i As Int32 = Me.DataGridViewSearch.Rows.Count - 1 To 0 Step i - 1
If DataGridViewSearch.Rows(i).Cells(6).Selected = True Then
Try
What I am trying to do is to loop threw a datagrid and find the checkboces that are checked.

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Opearator '=' Is Not Defined For Type DBNull And Type 'Boolean'

Jul 20, 2010

The following code at run time gives the error - Opearator '=' is not defined for type DBNull and type 'Boolean'.

The reason is the data at the table is set as NULL value.. How can I change it to accomodate the error.

Dim irowNo As Integer
For irowNo = 0 To DgvReturns.Rows.Count - 1
If DgvReturns.Rows(irowNo).Cells(2).Value = True Or

[Code]......

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VS 2005 - Operator 'And' Is Not Defined For Type 'Color' And Type 'Integer'

Jun 10, 2009

Public Pixels(0 To 95, 0 To 127) As Variant Red = Pixels(X, Y) And &HFF i get this code from VB6, and when i transfer to VB05 i got problem said " Operator 'And' is not defined for type 'Color' and type 'Integer'. " i sent to VS2005

Public Pixels(0 To 95, 0 To 127) As Object
Dim red As Object
Red = Pixels(X, Y) And &HFF

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{"Operator '=' Is Not Defined For Type 'DBNull' And Type 'Double'."}?

Jan 12, 2009

when a user inputs a value into a text box, i am searching that value in my dataset.although the number that i entered is in my dataset, i am getting this excemption.

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Operator '&' Is Not Defined For Type 'String()' An?

Mar 29, 2012

Dim ip_list, ipa, ipb, ip_start, ip_block, ip_end
Dim Response = Nothing
Dim SubNetMask

[code].....

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Operator '=' Is Not Defined ... For A Variable And Object Of THE SAME TYPE?

May 5, 2011

Okay, I am TOTALLY confused here. I have a class... say MyClass. It has several properties of another class of my type, say MyHelperClass (along with other properties).

I am doing the following:
Dim inst As MyClass = New MyClass() With {
.p1 = sv1,

[code].....

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Operator = Is Not Defined For Type String And Dbnull

Oct 9, 2010

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String
Dim cnn As OleDbConnection
Dim adptr As OleDbDataAdapter

[code].....

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SQL Query - Operator & Is Not Defined By Type GUID

Apr 20, 2011

I've got a problem in one of my SQL queries, the type GUID can't be used with the operator & (obviously from the title). Here's the few lines of code which I'm using:

Dim ClientsAssetID As Guid = New Guid(ClientsAssetIDTextBox.Text)
Dim Client1 As Guid = New Guid(Client1TextBox.Text)
Dim Client2 As Guid = New Guid(Client2TextBox.Text)

[code]....

ClientsAsset, Client1, Client2 and Client3 are all of type GUID, but are entered into the textboxes as strings, are converted to guid and then should all go smoothly into the query, but it's having a problem with linking everything together. The error I'm
getting is "Operator '&' is not defined for types 'String' and 'System.Guid'.How do I fix this? I've tried a few different things, such as using Ctype in the query, but they have also circled back to this error.

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Operator '-' Is Not Defined For Types 'char And 'char'?

Sep 30, 2010

Public Shared Function UrlTokenDecode(ByVal input As String) As Byte()
If (input Is Nothing) Then
Throw New ArgumentNullException("input")[code].....

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Operator '&' Is Not Defined For Types 'System.Type' And String'

Jan 14, 2010

I am trying to concate string and system.type using operator & in VB and i am getting error :

[Code]...

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Get Operator '=' Is Not Defined For Types Char And Long

Apr 11, 2010

Where X is a variable with a character stored in it. Works: If X = " " Then Valid = False Doesn't work If X = not " " Then Valid = False So what is the correct syntax? For the second one I get operator '=' is not defined for types Char and Long.

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VS 2010 Operator '<<' Is Not Defined For Types 'Char' And 'Integer'

Mar 14, 2012

I am trying to convert a piece of C# code, and I ran it through a converter, and had to make some changes.I am now running into this error:

Operator '<<' is not defined for types 'Char' and 'Integer'

The code is:

a += CType(URL(k + 0) + (URL(k + 1) << 8) + (URL(k + 2) << 16) + (URL(k + 3) << 24), UInt32)
b += CType(URL(k + 4) + (URL(k + 5) << 8) + (URL(k + 6) << 16) + (URL(k + 7) << 24), UInt32)
c += CType(URL(k + 8) + (URL(k + 9) << 8) + (URL(k + 10) << 16) + (URL(k + 11) << 24), UInt32)

The error occurs on each of the (URL(...) << X)

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Error - Operator '=' Is Not Defined For Type 'DBNull' And String "test"

Feb 23, 2010

I have the following query

Dim get_rmf_2 = From rmf In t_rmf _
Where rmf!NIVP = nivp_rap

When i run it i get an error :

Operator '=' is not defined for type 'DBNull' and string "test".

I suspect this is because the column "NIVP" in the datatable contains null values, I've tried yhe same thing without null values and it works.So how can i make this work ? ; the column "NIVP" really has a row "test" , and a normal SQL query works fine.

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Error: Operator '&' Is Not Defined For String " UPDATE BALANCE SET OBBALANCE = " And Type 'DataRowView'

Mar 22, 2011

Here textbox11 contains a float value and combo box contains a string do i have to put text or selected item

cmd.CommandType = "UPDATE BALANCE SET OBBALANCE = '"& TextBox11.Text &"' WHERE CUSTOMERNAME = "& ComboBox1.Text & " "

It gives the following error: Operator '&' is not defined for string " UPDATE BALANCE SET OBBALANCE = " and type 'DataRowView'.

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

Jun 5, 2011

i have code below...but i cannot run because this error..."Conversion from type 'DBNull' to type 'Boolean' is not valid."

CheckBox1.Checked = DataGridView2.CurrentRow.Cells(10).Value
CheckBox2.Checked = DataGridView2.CurrentRow.Cells(11).Value
CheckBox3.Checked = DataGridView2.CurrentRow.Cells(12).Value
CheckBox4.Checked = DataGridView2.CurrentRow.Cells(13).Value
CheckBox5.Checked = DataGridView2.CurrentRow.Cells(14).Value

how i have to set in my table to insert input 1 or 0..

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Dynamic Type Definition - Error: Type PropertyType Is Not Defined

Mar 11, 2011

I have this code working. It sets the Visible property of controlToSecure to False. [Code] However I would like to get rid of hardcoding types of properties. In this case i'm hardcoding Boolean. Instead I would like to define the property type dynamically. I tried it like below but I get an error on line 2 "Type property Type is not defined". I just defined that type on the line before though? Does anyone know why this doesn't work and how i could get it to work? [Code]

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Explicit Conversion From UDT(User Defined Type) To String Type?

Jul 22, 2010

Following is my code. Private Structure DISPLAY_ELEMENT_TYPE

[Code]...

Actually this is vb6 to .net converted code. I m getting compile error at following line

temp = Lset(DispElem(i)) bcz Lset is not supported in .Net Lset accept string data type for first parameter and interger for second.If you know any alternet solution or if you have any source code for Explicit convert UDT to string type and vice versa.

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Using An Interface Defined In A Generic Type From Within The Defining Type

Feb 14, 2012

In trying to add a bit of usage variety to a generic class I'm working on, I ran into this issue with trying to cast an object into an interface instance where the interface is defined inside the generic class.

[Code]...

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Type Cast To User Defined Type In .net?

Jun 11, 2009

i want to know how to type cast to user defined type in vb.net.I have a mark object which contains student id , subject name,subject id and mark. I have to read the subject id from a combo box and read corresponding mark value from it to a text box.

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String Concatenation In VIsual Basic 2005 - Operator '+' Is Not Defined For String " " And Type 'Range'

Jul 30, 2011

The intent of the code is to open an xls file -minimize it , search for keywords . there are columns like test case name ,priority(simple ,medium and high) with associated keywords.If keywords are found, it shld save the test case name - Priority in a text box. When i run this code i am getting err in

[Code]....

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Type Excel.worksheet Not Defined, Type Excel.workbook Not Defined

May 8, 2010

i am trying to read an existing excel 2007 file from vb.net i used a form with single button and i written code in button click event code is :[code...]

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It Says "Conversion From Type 'DBNull' To Type 'Boolean' Is Not Valid."_String?

Jun 9, 2011

Imports System
Imports System.Data
Imports System.Data.SqlClient[code]....

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Comparison Error Operator "=" Is Not Defined For Types 'Byte' And 'Char' While Converting C#

Jan 21, 2011

I am in the process of converting some c# code to that of VB.NET...I am running into error at the following

[Code]...

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'User Defined Type Not Defined' When Trying To Define A New 'process'

Dec 29, 2011

I am trying to redirect command line output to a list box in a vba macro, and I've found some code that I think might point me in the right direction, but I keep on getting the same error. When I use this code [code]It gives me the error in the title and highlights the first declaration line.What does it take to define a new "process".

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Error: Option Strict On Disallows Operands Of Type Object For Operator '='. Use The 'Is' Operator To Test For Object Identity

Jan 27, 2010

I am tightening up my coding with the Option Strict set to ON. It has now produced alot of errors. An example of this is:

If AllocatedDGV.Rows(i).Cells("RoomNumber").Value = RoomsAvailableDGV.Rows(j).Cells("RoomName").Value Then

It gives me the following error: Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity.

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Option Strict On Disallows Operands Of Type Object For Operator Use The 'Is' Operator To Test For Object Identity

Apr 6, 2012

I need to write an interface to get data to/from our data files.

We have a low level class that holds field values for each record read from the files.

This just holds two values, the value read from the file (DBValue) and the updated value that may need to be written back to the file (CurrentValue).

These values may be any of the standard value types (integer, date etc) or a string.

Either value (DBValue or CurrentValue) may be null if not defined.

I have written the class to manage this data which works fine while option strict is NOT on.

But we have an office policy of having option strict on all the time.

When I put option strict on, my object value comparisons fail with the error: "Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity."

Question, how should I change the following code to handle option strict on ...

This is all running on Visual Studio 2010

[Code]...

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"Conversion From Type 'DBNull' To Type 'Boolean' Is Not Valid" After Checking That It's Not DBNull

Jan 18, 2012

In my ASP.Net Web-Application, I'm getting this error: Conversion from type 'DBNull' to type 'Boolean' is not valid.

[Code]...

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Error15Operator '=' Is Not Defined For Types 'System.Type' And 'System.Type'

Feb 6, 2012

I have tried several ways but can not make this work. We are using .NET 2.0

vb
If DataGridView1.Columns(e.ColumnIndex).ValueType = GetType(String) Then
'this did not work either:
ElseIf DataGridView1.Columns(e.ColumnIndex).ValueType = GetType(DateTime)

[code]....

Quote:

Error15Operator '=' is not defined for types 'System.Type' and 'System.Type'.

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