C# - Data Type Allocations Analagous?
May 19, 2010I'm very interested in languages and their underpinnings, and I'd like to pose this question to the community. Are the following analagous to eachother in these languages?
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Dump All Memory Allocations?
Sep 17, 2009I've been using some memory profilers to try and track down a memory leak - but am swamped with posibilities.
Am wondering if anyone has a function to dump all memory allocations that are present as a form closes/disposes.
Parameters Data Type - Add Parameter With Same Data Type As Column Data Type
Feb 26, 2012For each column in data table i want to add parameter with same data type as column data type. But looks it's not that simple.
Dim cmd As New SqlCommand
Dim dType As New System.Data.SqlDbType
For Each cl As DataColumn In DataTable1.Columns
[CODE]...
How can I do this?
Create A Function Which Have Either 1 Parameter With A String As Data Type Or 2 Parameters With Double As Data Type?
Jun 11, 2012I need to create a function which have either 1 parameter with a string as data type or 2 parameters with double as data type.Something like the substring method.
View 2 RepliesData Type Mismatch Between Vb Date Datatype And Ms Access Datetime Data Type?
Dec 27, 2010I'v designed a ms access database table with one field having Datetime datatype. I can Insert data into it from vb.net front end by trns_dt DateTime.Now.DateBut when I fetch records from the tableand assign the dataset datasource as da, it shows datatype mismatch error.
daleDbDataAdapter("SelectDaily_Transactiondtp_from_dt.value dtp_To.value con)
dsDataSet
[code].....
Converting Double Data Type To String Data Type
Jan 31, 2010I have a program that calculates commission, but if the commission is nothing then I do not want it to show a zero commission. I want a message box to show a message that there is no commission earned.
View 1 RepliesUnable To Cast Object Of Type 'System.Data.SqlClient.SqlParameter' To Type 'System.Data.IDataParameter[]'
Aug 9, 2009My colleague gave me a DLL that manage all database business. I wanted to invoke a function that uses Stored Procedure and return the search result. In the function receive a parameter type in ystem.Data.IDataParameter[]. Below is my codes.
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Asp.net - Unable To Cast Object Of Type 'System.Data.DataView' To Type 'System.Data.IDataReader'
Apr 25, 2012I have a function (on vb.net) to get a data from a XMLWebService:
[Code]...
Nable To Cast Object Of Type 'System.Data.DataViewManager' To Type 'System.Data.DataTable'
Feb 19, 2010I added this lines in the form load of DataGridPrinter by Merrion in the codebank..[code]Unable to cast object of type 'System.Data.DataViewManager' to type 'System.Data.DataTable'.
View 2 RepliesUnable To Cast Object Of Type 'System.Data.DataTable' To Type 'System.Data.DataView'
Dec 31, 2009every time i run this code i get the same error
Unable to cast object of type 'System.Data.DataTable' to type 'System.Data.DataView'.
the code is
Dim plmExcelCon As New System.Data.OleDb.OleDbConnection
Dim cmdLoadExcel As System.Data.OleDb.OleDbDataAdapter
Dim PrmPathExcelFile As String
[Code]......
Conversion Of A Character Data Type To A Datetime Data Type Resulted In Out-of-range Datetime Value
Jan 12, 2010[code] "The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.The statement has been terminated." [code]
View 6 RepliesVS 2008 Casting Data-type To Same Data-type?
Dec 5, 2009I have one question. i have seen some codes like:
Req = CType(System.Net.HttpWebRequest.Create("url"), Net.HttpWebRequest)
Is it really necessary to cast the same type, or is there a difference when its not casted.
VS 2008 Dragdrop - Check If The Present Data Type Inherits From The Base Type
Aug 20, 2009I have a number of controls (Device1, Device2, etc.) that all inherit from BaseDeviceControl. In the DragEnter event handler I am trying to test for the correct type by using the BaseDevvceControl like this....
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Conversion From Type 'DBNull' To Type 'Decimal' Is Not Valid When Field Has Data?
Feb 7, 2012I am pulling data from a local MSSQL database using a stored procedure, then send the data to a web service. Every part of the component works well except for a pesky problem will a DBNull being returned from the DataRow field, when I know that the field is not null and has valid data. The database and associated INSERT statements that add to this field are designed to not allow NULL entries. When I debug break the program on or right before the line that throws the error I see that the field has valid data for the current row.If I add a null check to the code (as below) the operation continues as normal:
Dim dataResultsTable = Me.myViewTableAdapter.GetData(int)
For Each myDataRow In dataResultsTable.Rows
If worker.CancellationPending Then
[code]....
Why is the read operation returning DBNull instead of the data in the database?
EDIT: Just to be clear, the operation does return the proper data, but the data is not being saved into the variable.
.net - Make Sure The View Is Rendered Only When The Type Of DataContext Matches Data Template's Target Type?
Dec 10, 2010<ItemsControl DockPanel.Dock="Top" ItemsSource="{Binding Path={x:Static vmc:clsPersonViewModel.ChildrenPath}, Mode=OneWay}">
<ItemsControl.ItemTemplate>
[Code].....
In the code above, if there are no children (the ChildrenPath property returns NULL), nothing is rendered in the view. In the code below, when ChildrenDataSetPath is NULL the XamDataGrid still gets rendered. How do I achieve the same for a single object (as opposed to a collection) as the datacontext?
<DataTemplate DataType="{x:Type vmb:clsPersonViewModel}">
<igDP:XamDataGrid DataSource="{Binding Path={x:Static vmb:clsPersonViewModel.ChildrenDataSetPath}}">
[Code].....
Error Unable To Cast Object Of Type 'System.Data.SqlTypes.SqlDecimal' To Type 'System.IConvertible'
Jun 6, 2011I have an InvalidCastException Error in my program. The program is that i try to insert an employee record into a database table after getting the details from a form. I've used Money data type is SQL Server for salary and SqlTypes.SqlDecimal data type in employee template class. i've used a stored procedure to pass the values and i add the basic value by passing a parameter by the method
Dim prm8 As SqlParameter = com.Parameters.Add("@basic", SqlDbType.Money)
prm8.Direction = ParameterDirection.Input
prm8.Value = emp.Bsc
I've used the money datatype itself even in the stored procedure variable.I get the following error.
failed to convert parameter value from sql decimal to decimal
Even if i use
prm8.Value = Convert.ToDecimal(emp.Bsc)
I get an error Unable to cast object of type 'System.Data.SqlTypes.SqlDecimal' to type 'System.IConvertible'.
Ado.net Error (Unable To Cast Object Of Type 'System.String' To Type 'System.Data.IDataReader'.)?
Jan 29, 2012I am getting this error when I am tring to load string type to data table)
Using connection As New SqlConnection("connectionstring;")
connection.Open()
Using Command As New SqlCommand("SELECT ClientId,forename,surname from t_clientdetails
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ASP.Net Error - Unable To Cast Object Of Type 'System.String' To Type 'System.Data.DataTable'
Oct 4, 2009I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.This is the code I'm using
Dim str As String = String.Empty
If (Session("Brief") IsNot Nothing) Then
Dim dt As DataTable = Session("Brief")
If (dt.Rows.Count > 0) Then
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Unable To Cast Object Of Type 'MySql.Data.MySqlClient.MySqlException' To Type 'MySql?
Sep 20, 2011error " Unable to cast object of type 'MySql.Data.MySqlClient.MySqlException' to type 'MySql.Data.MySqlClient.MySqlDataReader'. " ?
THIS IS THE CODE Ssql = "SELECT ItemID, Prodname, qty, Desc, Cost * FROM items ORDER BY ItemID ASC"
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Get The Number Type Data As A Number Type Using The Dataset Readxml Method?
Feb 17, 2010i am getting the xml using readxml method. And then display the data in datagrid. But number type columns comes as string type in the dataset. So when datagrid displays , sortingdatagrid columns is not correct. For example it sorts like this:
Salary
1180
12133
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Send Data To An Array With Different Data Type Declaration?
Apr 28, 2011In order to re-sort the data received in USB easier, I send the data array received in USB (declared as Byte) to a temporary array (declared as SByte) to re-sort. I declared the temporary array as SByte just for easy sorting. After I compiled, an error message came up "make sure not divided by zero". I tried to use convert.SByte but still didn't help. Is it not allowed to send data to an array with different data type declaration?
View 1 RepliesVS 2010 : Error - A First Chance Exception Of Type 'System.Data.OleDb.OleDbException' Occurred In System.Data.dll
Sep 2, 2011I've spent a substantial amount of time trying to figure this out, but I keep getting the same error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A first chance exception of type 'System.NullReferenceException' occurred in project1.exe
This happens when I try to use the DataReader.my code is
Public Function Identification() As List(Of Integer)
Dim returnIndex As New List(Of Integer)
Dim dbCount As String = "SELECT Bookingid FROM bookdetail WHERE Date =" & getCurrentTimeString() & " 12:00:00 a.m."
Dim count As Integer = 0
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A First Chance Exception Of Type 'System.Data.OleDb.OleDbException' Occurred In System.Data.dll
Sep 4, 2011i need to clear this error
A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll
A First Chance Exception Of Type 'System.Data.SqlClient.SqlException' Occurred In System.Data.dll
Jan 22, 2009I am just trying to get the system to open a database and I get this error:
A first chance exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll
here's the entire code of the main form
=======================================
Imports System
Imports System.Data
Imports System.Data.SqlClient
[code]....
the error is generated at the open method note* this same code works fine in another computer, the main difference is that this one has a 64 bit OS.
Data Type In Ref
Nov 9, 2009Dll libray with VC++ [code] An unhandled exception of type 'System.ExecutionEngineException' occurred in TestLib.exe
View 4 RepliesWhich Data Type To Use
Sep 1, 2011I am beginning to understand the concept of Collection data type.The data I am collecting has several fields (which are constant) but the number of records could vary.For such setup, what data type would be more appropriate? I need to be able to search array (or whatever) for no duplicate values.
View 6 Replies.net - Edit 'bit' Data Type?
Oct 22, 2009I am coding in Visual Basic. I am using a checkbox control. Now depending on its checked property I need to set/unset a bit column in a SQL Server database. Here's the code:
Try
conSQL.Open()
Dim cmd As New SqlCommand("update Student set send_mail = " + _
[Code].....
The send_mail attribute is of bit datatype. This code is not working.
Change A Data Type?
Jul 27, 2009How do you change a data type, for example an integer to a currency type, I'm an old vb6 user and I cannot figure it out because there is no such animal.I want to do a program for my album collection and I cannot format values ...
View 1 RepliesData Type Error?
Mar 31, 2009I have the following piece of Code in my application shown below,
Try
Dim Oracle_num As New System.Data.SqlClient.SqlCommand(("SELECT Oracle_no FROM gprdsql.TblOracleNos WHERE Prac_no='" & _
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Data Type Mismatch In SQL?
Apr 19, 2010I'm trying something which should be very simple, I have an access database with a column of dates and I want to select a specific date.
Dim StartDate As Date
StartDate = txtStartDate.Text
Dim DBconnection As OleDb.OleDbConnection
Dim strSQL As String = "SELECT * FROM ClientData WHERE Dateofarrival = '" & StartDate & "' "
I keep getting the error "Data type mismatch in criteria expression". The data type in access is set as a short date.