Error Conversion From String To Type Double Is Not Valid

Aug 17, 2014

This code works somewhat, but it won't place all of the text into the textbox.. If I change a few things I get an error where I highlighted the code in red. Conversion from string "" to type 'Double' is not valid. But the code works, like I said somewhat, as you see it, it just doesn't load all of the text to the text box.555632.txt

Code:
Public Class Form1
Private Sub OpenFile_Click(sender As Object, e As EventArgs) Handles OpenFile.Click
Dim IdxList As String
Dim ProgArray() As String
Dim Index() As String

[code]...

View 10 Replies


Similar Messages:

ADO.NET :: Error - Conversion From String "'," To Type 'Double' Is Not Valid

Sep 27, 2010

I am having badly stuck!!I have spent hours in trying to solve that.

I am having the following loving function:

[Code]....

In the above function I pass the following string:

[Code]....

sqlstring = "execute dbo.InsertDeleteUpdate " & patient & ",'" & _date + "'," & gridcost & ",'" & txtinsurances.Text & "','" & checkreceipt.Checked + "'," & appointment_xidInsertDeleteUpdate(sqlstring)

[Code]....

[Code]....

View 1 Replies

DataSource Controls :: Conversion From String "" To Type 'Double' Is Not Valid Error?

May 14, 2010

Getting this error: Conversion from string "04/07/2010" to type 'Double' is not valid. ---> System.FormatException: Input string was not in a correct format.

Using cmdUpdate As New SqlCommand
With cmdUpdate
.Connection = onyxConnection
.CommandType = CommandType.StoredProcedure[code]....

View 7 Replies

Conversion From String "" To Type 'Double Is Not Valid?

Apr 4, 2011

I keep getting this error when attempting to execute this code, even after placing a CType around the value and defining it as double?Private Sub GridView1_RowDeleting(sender As Object, e As System.Web.UI.WebControls.GridViewDeleteEventArgs) Handles GridView1.RowDeleting' The deletion of the individual row is automatically handled by the GridView.

View 2 Replies

Conversion From String "" To Type 'Double' Is Not Valid?

Apr 4, 2011

I have a variable that contains an integer which I then want to save as the value for a column (of type integer in the sql database and int32 in the entity model), but when I try this I receive the error:

"Conversion from string "" to type 'Double' is not valid"

I'm very confused by this since I'm not using a string or a double? The trouble-making line is:

UpdateBed.First.occupant = GetID

And here is the full code snippet:

Private Sub btnReserve_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnReserve.Click Using dbContext As pbu_housingEntities = New pbu_housingEntities ' Check that the room is still available.

Dim hall As String = CStr(Session("hall"))
Dim room As String = CStr(Session("room"))
Dim checkOccupants = From p In dbContext.Rooms [code]....

View 1 Replies

DataSource Controls :: Comparing DAtaValueField To Enum - Conversion From String "" To Type 'Double' Is Not Valid?

Mar 2, 2010

I am trying to do the following:

If (ddlContacttype.DataValueField) = MyClass.ContactTypeEnum.MyContactType

[Cde]....

View 4 Replies

Forms Data Controls :: ERROR - Conversion From Type DBNull To Type String Is Not Valid?

Jan 13, 2010

I have a gridview which I'm trying to get the display of phonenumbers listed in a certain display format; (xxx) xxx-xxxx.If I have the code such as this, it displays the unformatted phone number and (000) 000-0000 for the null items.

[Code]....

View 2 Replies

Conversion From String "Handler.ashx?id=" To Type "Double" Is Not Valid

Dec 15, 2010

I am wishing to retrive picture stored in sql server database to web form using gridview control. I have created a Handler.ashx file with following coding:

[Code]....

And in the aspx page I am calling this as:

[Code]....

But when I am executing this project, it prompts following error:

[Code]....

View 3 Replies

Forms Data Controls :: Conversion From Type 'TextBox' To Type 'String' Is Not Valid?

Sep 6, 2010

I have a FormView that allows a user to register for a company event. I want to do a couple of things with this form.

1. I need to write this data to a MS SQL database

2. I need to send an email confirmation of their registration to their email.

I know how to do both of these things, but i am having trouble doing both at the same time.

It would be nice if I could do it in one click, but I coded it into two pages to try to help simplify it.

The first page allows the user to input their information into a formview and when they click the submit button, it places those answers into session variables:

[Code]....

[Code]....

The Second page confirms the users information by taking those session variables and placing them into labels:

[Code]....

[Code]....

However, after I place information into the formview on the first page, it throws up this error:

"Conversion from type 'TextBox' to type 'String' is not valid".

View 3 Replies

DataSource Controls :: 'Conversion From Type 'DBNull' To Type 'String' Is Not Valid.'

Feb 17, 2010

I'm trying to get a value from a database and I'm getting an error, see code below:

[Code]....

I get and error when I'm trying to convert the value out of the stored procedure to the string SNAME. Error is as follows:

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

and the stored procedure is as follows:

[Code]....

View 6 Replies

ADO.NET :: How To Handle Conversion From Type DBNull To Type String Is Not Valid

Oct 5, 2010

Conversion from type 'DBNull' to type 'String' is not valid

Dim OledbString As String = ("SELECT Product_Hierarchy,Model,Origin,Item_Code,Description,Price_USD FROM [sheet1$]")
'Dim eAdapter As New SqlDataAdapter(sqlString, connection)
Dim eAdapter As New OleDbDataAdapter(OledbString, connection)
Dim eTable As New DataTable()
eAdapter.Fill(eTable)
Dim i As Integer = 0
[code]...

View 8 Replies

Web Forms :: Conversion From Type DBNull To Type String Is Not Valid

Nov 18, 2012

I have a web in ASP.NET AND CODE IN VB MY DATABASE IS ACCESS WHICH WAS CREATED INITIALLY AND OLD DATA IS ACCESSED FROM THIS ACCESS DATABASE.

THE PROBLEM IS WHEN THE FIELD IS BLANK THE FOLLOWING ERROR COMESĀ 

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

MY CODE IS AS UNDER

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Dim PNO As String = inputtxt.Text
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:awingAWing.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
con.Open()
Dim qstr As String
qstr = "select * from PersData where PNO='" + inputtxt.Text + "'"

[Code] .....

View 1 Replies

Conversion From String To Type 'Date' Is Not Valid

Aug 24, 2010

Im receiving a strange error Error Message: Conversion from string "15/08/2010 22:21:35" to type 'Date' is not valid.

I know this is generally down to cultural date formats etc, however the reason this is strange is it just randomly occured twice in the last week, the website has been running since october and nothing has changed,

The error constantly occured until the IIS was reset and recompilled the site, its been running fine since, however im just trying to figure out what could cause such an error to occur.

I've narrowed it down to a line of code which is:

bktime = DReader.Item("Bktime").ToString
bktime = Year(CDate(bktime)) & "-" & fmt(Month(CDate(bktime)), 2) & "-" & fmt(Day(CDate(bktime)), 2)

Has anyone else encountered this randomly occuring and is there anything i can put in place to prevent this in future?

View 8 Replies

VS 2013 - Conversion From String To Type Integer Is Not Valid

Apr 27, 2014

I keep getting this error

This is the code

Sub btnAdd_Click(sender As Object, e As EventArgs)
'converting datatypes to integer
Dim insertB As Integer
Dim insertA As Integer
Dim cat As Integer
cat = ddl.SelectedItem.Value

[Code] .....

View 3 Replies

MVC :: Getting Error: The Parameter Conversion From Type 'System.String' To Type 'Models.Organization' Failed?

Oct 15, 2010

I seem to be having issues with posting forms with DropDownLists. I've looked all over the net and tried various solutions, but none seem to work for me.

I'm getting the following error: The parameter conversion from type 'System.String' to type 'Models.Organization' failed because no type converter can convert between these types.

Here's my ViewModel:

[Code]....

Here's my controller:

[Code]....

The objects are generated by ADO.NET Entity Framework. Organizations is its own object, but also a property of Profile (each user belongs to one organization). Now I understand what the error message is saying, just not sure how else I'm supposed to do this.

View 7 Replies

Conversion From String "09/28/10 9.00AM" To Type 'Date' Is Not Valid

Sep 28, 2010

I am getting the below error. see my code below and let me know what is wrong.

dim sDatetime as string = startdate & " " &starttime & "AM"
dim dt as Date = CDate(sDatetime)

I am getting the Conversion from string "09/28/10 9.00AM" to type 'Date' is not valid error in this line.

View 5 Replies

Forms Data Controls :: Conversion From String "given_name" To Type 'Integer' Is Not Valid?

Jul 6, 2010

Just a bit of infor before we get to the code...

This is all in the Code Behind under the Page Load function.

Basically, I'm trying to convert an ASP page into ASP.NET. I've worked with ASP and PHP a lot more than I have with ASP.NET and I'm just having trouble with the syntax.

Here is the code:

[Code]....

View 3 Replies

DataSource Controls :: Conversion From Type 'DBNull' To Type 'Integer' Is Not Valid?

Jan 22, 2010

I get the error - Conversion from type 'DBNull' to type 'Integer' is not valid. - on the line.....

Dim newid As Integer = e.Command.Parameters("@latestRowId").Value.........in vb code behind.

I have the identical code for another page with the exception of the field names and it works fine. The only thing I did differently, as far as I know, is I copied the asp and code behind from the page that works into this page and manually changed the field and table names. I don't know what the problem is. Does anyone see any problems?

[Code]....

View 2 Replies

Error: "Conversion Failed When Converting Character String To Smalldatetime Data Type"

Jun 29, 2010

I am getting an error when attempting to call a stored proc from my asp.net page.

e.Message = "Conversion failed when converting character string to smalldatetime data type."

The stored proc is being called by:

The asp.net code that is calling the stored proc is:

//Display search results in GridView;
SqlConnection con = new SqlConnection(strConn);
//string sqlItemSearch = "usp_Item_Search";
SqlCommand cmdItemSearch = new SqlCommand(sqlItemSearch, con);

[Code]....

View 5 Replies

Databases :: Catching NULL Values Error "Cannot Cast DBNull.Value To Type 'System.Double'. Please Use A Nullable Type"

Apr 21, 2010

I am LINQ querrying against a datatable. However, I am unsuccessfull with catching null values. Here is my code that is giving me the following error.

[Code]....

I am checking to see if minperc is null. However to check that it still is trying to convert the value to double. Cant figure out a way around it. Here is the error: Cannot cast DBNull.Value to type 'System.Double'. Please use a nullable type.

View 1 Replies

LINQ Group By And Compare Date Error Message - The Conversion Of A Char Data Type To A Datetime Data Type

Jan 27, 2011

I have the following:

[code]....

I keep getting this error:

Message = "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value."

What i'm trying to do is group by ContentObjectId and then get StartDate that is greater than today.

I'm using entity framwork and MS SQL2008

View 2 Replies

MVC :: Change Default Value Type Conversion Error Message?

Mar 7, 2010

How can I change default value type conversion error message while posting form value in mvc 2.

View 1 Replies

SQL Server :: Error: Conversion Failed When Converting The Nvarchar Value ' ' To Data Type Int

Mar 28, 2011

I have a query in SQL Server 2008:

[Code]....

Everything looks fine but I keep getting the error: 'Conversion failed when converting the nvarchar value 'xxxx' to data type int... where xxxx is the the value of @Query.

View 3 Replies

MVC :: Error - Attribute 'MyApp.DateTime' Is Not Valid On This Declaration Type

Sep 5, 2010

I have the following custom model binder attribute:

[Code]....

However, when I use it as follows:

[Code]....

I get the following error:

Attribute 'MyApp.DateTime' is not valid on this declaration type. It is only valid on 'class, struct, enum, interface, param' declarations.

What am I missing?

View 5 Replies

Forms Data Controls :: Conversion Failed When Converting Character String To Smalldatetime Data Type

Jun 29, 2010

I am getting an error when attempting to call a stored proc from my asp.net page.

e.Message = "Conversion failed when converting character string to smalldatetime data type."

The stored proc is being called by:

The asp.net code that is calling the stored proc is:

[Code]....

View 8 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved