I am playing around building a VB.net windows forms app.Mostly going well, but when I do executenonquery I am getting the error:Failed to convert parameter value from string to int32. I am unclear where the problem is but here is my code......
Private Sub cmdClockIn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdClockIn.Click
Dim empNum As Integer = Convert.ToInt32(frmMain.txtEmpID.Text)
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To be able to sort a dictionary by value I'm using this code:
Dim idCurrentJobs As IDictionary(Of String, Int32) = New Dictionary(Of String, Int32)
'The string in the dictionary represents a jobname and the integer is a counter for how many jobs im currently are running in the application'
idCurrentJobs.Add("JobName1", 2)
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This question is based on VS 2008 using VB I have a detail Window form which is bound to a SQLServer table using a BindingSource &TableAdapter. The Table is mostly Text & Date fields with the Table Key has an Identity field
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I have this code but the problem is that I get an error which says "Failed to convert parameter value from a String to a Int32." Here is the code that I am using:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim conn As New OleDb.OleDbConnection
conn.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:Documents and Settings1B09158My DocumentsUser.mdb"
conn.Open()
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I'm trying to use DataView.Rowfilter and I'm getting an exception which says "Cannot perform 'Like' operation on System.Int32 and System.String".
Here's the code...
Dim str2 As Double = CDbl(searchSTR)
Me.shipperDV.RowFilter = fieldName & " LIKE '*" & str2 & "*'"
I wrote the code below which calculates the length of a line on the form and save record. An error occurs when the programme tries to save the record. It gives me "Cannot perform '=' operation on System.Int32 and System.String" error. I checked the data type of "ID"(int), "Microscope"(Varchar), "Magnification"(int) and "Calibration"(Decimal), and they are fine so far as I know.
Code:
Private Sub btnEnd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnd.Click
'Check if the length textbox is not empty
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I am using row filter with a like operator on a data view but getting error "Can not perform like on int32 and string" How to solve it
View 1 Repliesusing Visual Web Dev 2008 Express and i am having an error when converting a set of integers to string. see code below. I cannot work out what it is that i am typing incorrectly. For ref, i return ten 0's as the result.
Dim numbers(9) As Integer
For i As Integer = 0 To numbers.Length - 1
numbersString &= numbers(i).ToString & " "
Next
textbox2.text = numbersString
i have a textbix in which the user is restricted to enter date in the following format "dd/mm/yyyy" .
then in code behind I am calling a stored procedure to which i am passing this date as a datetime parameter but i get an error
objCmd.Parameters.Add("@DateOfApplication", SqlDbType.DateTime).Value = Convert.ToDateTime(txtDateOfApplication.Text.Trim)
how I might cast convert this string date into datetime to pass to my stored proc
I have the following code:
Imports System.Data.SqlClient
Public Class Main
Protected WithEvents DataGridView1 As DataGridView
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When I debug this, I put the line break on that line and look at the Table Value, which shows 0, but I know that there is data for that time frame.
i am using DateTimePicker control....my code is TextBox2.text=DateTimePicker1.Text.......while changing it correctly dispaly the selected date in textbox......the problem is i want to store the date in my database of field datetime type........when i click the add button it shows "Syntax Error Converting DateTime from String"
View 1 RepliesGetting this error when updating a row via a gridview with a sqldatasource in Vb.net/SQL Server 2000. No matter what input (1/1/2010, blank, etc) I give it I can't seem to get it right.
Code before the input is passed to the sp:
Dim sqldatenull As DateTime
Dim DateVerify As DateTime
sqldatenull = DateTime.MaxValue
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Im in the process of building a call loggin system and its finally been put on the server, but i keep getting the above error "Title" the first stage it goes to be authorised and when the authoriser auths it...it updates the table with the date they authorised it. which is fine, the next stage is the Business Analyst where they check all the content of the task and then approve it but for some reason unknown to me it keeps falling over on the .dateAuthorised
My Sql Column to hold the date authorised is a Datetime datatype and im converting a string to a data time within the procedure this is my Code behind page
Dim StatusNew As Integer = 53
Dim CurrentStage As Integer = 51
ITUpdateTaskTable.Add("@spWorkID", Replace(TskNumLab.Text, "LC", ""))
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I have the following code:
Imports System.Data.SqlClient
Public Class Main
Protected WithEvents DataGridView1 As DataGridView
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When I debug this, I put the line break on that line and look at the Table Value, which shows 0, but I know that there is data for that time frame.
I am getting an error with this Dim Web As New WebClient Web.Proxy = "69.196.16.237:62159" It says runtime errors may occur when converting string to System.Net.IWebProxy What does that mean?
View 9 RepliesI'm getting this error
Unable to cast object of type 'System.Int32' to type 'System.String'.
when doing a routine LINQ to SQL query:
Return (
From n In DbContext.Newsletters
Where n.NewsletterID = NewsletterID
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How is it possible that an Int32 can't be cast to String? How can I debug something this? Since it all happens deep in the bowels of LINQ, I can't even get any indication what field this is angry about.
The error is: Conversion failed when converting date and/or time from character string.Basically I'm trying to make it so that when someone clicks a location in a list box it increments the correct field in a Stats table by 1 to say that they clicked the location. I've been trying to solve this for a while now and can't get anywhere. My date is in date format, and so is the Date field in my Stats table. My code can be seen below.
Dim Current As String
Dim Check As String
Dim objCmd2 As Object
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The issue comes in with the second SQL statement I think. I don't understand why adding a date into a date field would be an issue, I've tried adding it as a string which didn't work.
Dim i as integer
For i = 0 to 365
sqlinsert.InsertCommand="insert into cashdate (date) values (getdate()+'" & i & "')"[code]....
getdate is a function in the database that returns the datetime of now i have an error that says conversion failed when converting date or time from character string .what to do now ??
I have an update query and I'm receiving the error "Failed to convert parameter value from a String to a Int32."
I'm assuming this is because of a format issue... I'm using Text and Date formats. I've tried a few things but I'm not sure exactly what is causing this error.[code]...
i am trying to save data from unbound datagridview to sql database.Failed to convert parameter value from a String to a Int32. The following is my
Private Sub btnPlace_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPlace.Click
' Modify the following code to correctly connect to your SQL Server.
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I'd like to see what is about to be sent to the SQL Server from my SqlCommand before SQLCmd.ExecuteNonQuery() runs.
I'm trying to debug because I am receiving the following error:
System.FormatException: Failed to convert parameter value from a String to a Int32.
Normally, I would use SQL Server Profiler to view what is being sent to SQL Server, but my statement is not making it that far. Is there a way to determine what it is trying to convert? I am having problems determining which parameter is causing the error.
I am getting an error - "Failed to convert parameter value from a String to a Int32"
Background Information:
Table: Customer
Fields: CustomerID, Title, Forename, surname, street, town, country, postal code, home phone, mobile phone, work phone, email.
All the data types in this are Strings with the exception of CustomerID.
Table: Country
Fields: CountryID, Country
CountryID = Integer, Country = String
There is a relationship between country.country and customer.country. I have made country a combo box with the contents of country inside it. This problem is resolved if I remove country as an input - but I need it in!
I am getting this error, Not sure why it is happening "Error The SqlParameterCollection only accepts non-null SqlParameter type objects, not Int32 objects."I have tried with all sorts of possibilties, now try to enter default data as dummy data,
Using connection As New SqlConnection
connection.ConnectionString = ConfigurationManager.ConnectionStrings("DentalDeviceConnectionString").ConnectionString
connection.Open()[code].....
Is it possible to extend primitive types such as System.String and System.Int32 (IE: integer) in .Net 4 and if so how?
To be more specific, I am aware of the concept of partial classes but this doesnt seem to be the answer. Also I find that System.String is not inheritable and Int32 is a structure.
Lastly I am interested in knowing both a VB.Net and C# answer to the above question.
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.Sql Partial Class _Default
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For this code, I'm trying to have it pull the ID of the doctor from the database and only show their patients. I keep getting this error when I try selecting one from the list though, right at the red section.
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I get an error "Cannot perform '=' operation on System.String and System.Int32" on the following code:
VB.Net Code:
Public Sub board2_OnGameWon(ByVal sender As Object, ByVal e As EventArgs)
If Not board2.isCheated() Then
Dim time As Integer = board2.getGameTime()' I have tried changing this to String
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The exception is in the lines where I 'Dim betterScores' above. The idea is that when the player wins a game their score is placed and held in the betterScore variable. It is then written to an xml file later on.
I have a Difficulty Menu item (System.Windows.Forms ToolStripMenuItem) containing 4 choices, 3 of them work but one doesn't. The one that doesn't work is "1.0 (Normal)" and in the Sub New is "adjustDifficulty(mnuDifficulty100)"I have copied some other subs that are associated with this code below.
VB.Net Code:
Public Sub New()
' This call is required by the Windows Form Designer.
InitializeComponent()
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I'm having a problem converting a string of letters to a string of numbers. I've tried:
Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0
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I'm getting a sporadic 'Unable to cast object of type 'System.Int32' to type 'System.String' Exceptions at .SingleorDefault() in the below code. It works 9/10 times but randomly it throws an exception. I made sure that SettingID that i'm passing has no Null Values and the data in the table always exists for the settingID, and i'm always passing SettingID as Integer.
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iNCEEB = .First.NCEEB '<-- Im getting the error in this line, iNCEEB is integer .First.NCEEB is short.
NCEEB Server Datatype property is smallint
where is that "to type 'System.String'." coming from?
I'm using vs2008 and mssql2008.
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