Insert GUID Into Datatable?
Jun 22, 2010
I'm calling a GUID with a system function and trying to insert it into a database as a primary key. i'm using vb 2010 .net framework with sqlce server making my datatables. the column is AutoNumber which i set up to be a uniqueidentifier. the length is not adjustable and set at 16. i got all kinds of not parsing query errors. i've edited the insert statement a bunch trying to figure this out. i've went so far as changing the table schema of AutoNumber to be just a nvarchar with length of 100. it's something to do with how i'm inserting the GUID. in the code below i'm converting it into a string then inserting it into my table. is this wrong?? i've tried finding other ways of doing it but it's a little confusing. everything else in the code works perfectly it's just this part that is keeping me from completion.[code]...
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Feb 10, 2011
I'm creating a web project for one of my uni modules using Visual studio 2010. I'm using asp.net membership and have all of my sql-server tables set up correctly (I'm pretty sure).I have a form that I have created myself that inserts into the database using sqlDataSource.insert(). I had some problems initially with not being able to insert any data into the table at all, but I have cleared that up.My problem now is that I need to insert the currently logged in user's userID into one of the columns of the table. But every time I hit the submit button, I am told I cannot insert null values in the userID column.
I can retrieve the userID using this snippet:
Dim userID As String
Dim memUser As MembershipUser
[code].....
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Feb 26, 2012
im workin on a task that will get the current computers Default Gatway, So i chose the easiest option, using the Registry, in most cases i find this with no problem at all, here's the code im using right now,
Public sHost As String = My.Computer.Registry.GetValue _
("HKEY_LOCAL_MACHINESYSTEMControlSet001servicesTcpipParametersInterfaces THE GUID NEEDED HERE ", "DhcpServer", Nothing)
Which works fine, if i put My GUID in where i've stated in above code, I get the right value ect..., no what i was woundering is how would i get the program to preform this task on another Computer as their GUID will be diffrent, if their away i can do this with simplicity?
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May 28, 2009
How to insert a column in datatable at Perticular index in vb 2003.
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Feb 13, 2011
I am fairly new to visual basic 2008 but not to visual basic(vb6). I want to insert a new row in the database table (library.mdb). I connected the database into my project and is bounded by a dataGridview control. I have no problem in getting the records from the database. I used the code under click event of a commandButton, after clicking the button neither the record inserts in the database table nor the program generates any error. The code I used is :
Dim bkrow As LibraryDataSet.Book_MasterRow
bkrow = LibraryDataSet.Book_Master.NewBook_MasterRow
With bkrow
.B_no = B_noTextBox.Text
.ISBN = ISBNTextBox.Text
[Code] .....
Here Book_Master is the database table. LibraryDataSet is the dataset, Book_MasterTableAdapter (not used in the above code) is the TableAdapter. Is there anything missing in the above code? Is there any other method to enter data into the database in visual basic 2008?
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May 23, 2010
I have created a gridview to allow users to type two fields in each row after that I added the user data into a DataTable now I want to insert this DataTable content into the database where each row will have 1 uniqe Id in the database without using loop.If it is not possible without a loop please show me how to do this with the loop Again I already have the DataTable filled up and it is ready to be inserted into the database?
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Aug 4, 2010
I'm trying to insert a new line in a cell of my datatable. When I hover the cell it shows it like it should. Everything has a new line.[code]
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Oct 7, 2009
I have a SQLClient.DataSet in VB.NET, and I want to insert the entire thing into a SQL Server table without having to do the following:
[Code]...
Since I've got close to a million rows (all pretty skinny, so it's not much space), I obviously don't want to run this loop and generate a million INSERT statements.
I know that one option is to use a linked server when I initially fetch the data, since it's coming from another SQL Server, and just have it to the INSERT from there. However, if I already have the data in my application, is there a more efficient way to bulk insert it? Can I somehow pass the DataTable as a parameter to SQL Server and have it sort it out and insert the rows?
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Aug 9, 2010
[code].....
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Oct 23, 2011
I need a way to insert DataTable to asp GridView that contains already built Columns with turning autoGenerateColumns to False I just need to connect some DataTable's Columns to specific columns in Grid and
change other stay as they are
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Jul 12, 2011
I am pretty new to using LINQ and have been trying it out querying my strongly typed DataTable.
I have managed to perform a 'Select' ok but was wondering if someone can point me in the right direction to do Insert and Updates. I'm not sure if LINQ is best doing an insert at all?
My Select code is as follows:
Dim results = From myRow In _dt.AsEnumerable() _
Where myRow.Language_key = Lang And _
myRow.Section_key = SectionKey And _
[Code]....
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Jun 2, 2012
I have this code, but it only inserts 7 records out of 54. i am sure that the records are fine in the datatable.
Dim dt As DataTable
Dim sc As SQLiteCommand
Dim Script As String = Nothing
Dim Script2 As String = Nothing
Dim Script3 As String = Nothing
[Code]...
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Feb 29, 2012
I have a datatable with some rows I need to insert that datatable in to database using a stored procedure.
For Each row As DataRow In dt.Rows
cmd.Parameters.Add(New MySqlParameter("@DOWNLOAD_ID", dt.Rows(0)("DOWNLOAD_ID").ToString()))
cmd.Parameters.Add(New MySqlParameter("@FINALY_FIELDCODE", dt.Rows(0)("FINALY_FIELDCODE").ToString().Replace("|", "").ToString()))[code]....
When i do this I got an exception {"Parameter '@DOWNLOAD_ID' has already been defined."} How to get rid of this exception and can we insert the datatable with out for loop.
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Mar 18, 2010
I am working with VB.NET.. i have a DataTable called "QUESTION", containing 3 fields:
QuestionNumber (unique integer key)
QuestionText
QuestionType
In my SQL Server database I created a Table called "QUESTION" with the same fields.
QuestionNumber is defined as integer unique key, auto increment
Now, when i make a bulk copy to insert the DataTable into the SQL Server, the database overwrites my QuestionNumber from the DataTable and generates new ones (starting from 1 increment 1).
How do i have to change my database setup, that the original QuestionNumbers are copied into the database?
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Dec 3, 2008
There are plenty of SELECT (...) VALUES (...) statements and Parameters phrases to go with the VALUES. Those appear unhelpful to me as I have no form fields or datagrids and will be working with all the rows in a DataTable in a DataSet. Once started, this application will run to completion, writing as few as 10000 rows or as many as 250000 rows
My Task is to write out the contents of each specified DataColumn in the DataTable, one DataColumn at a time. The insert will also include the key columns and use the datetimestamp of the records as a criterion. Nulls in the specified columns are included.
My source is a DataTable, my target for the Insert is a "tall-skinny" table in an Access database. There is a smaller DataTable that is related to the source DataTable, if I was writing from within the AccDB I would use Joins. I have created a DataRelation, but have no idea how to use it in this context..
I have tried many different SQL statements but they all fail on Select. Here are snippets of the code:
'now, instantiate the specified DataTable from among the DataTables filled above
strDDTableNm = CStr(rsDDTblNms.Fields("Table_Name").Value)
Dim dtSrcTable As DataTable
[code]....
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Mar 15, 2010
I want to create a sub that gets changes from my typed dataset and datatable. But it says mydatatable is not a public member of dataset. Passing in as objects.
Public Sub GetRateChanges(ByVal myDataSet, ByVal myDataTable)
If myDataSet.HasChanges(DataRowState.Modified Or DataRowState.Added) Then
' Create DataSet variable.
Dim xDataSet As DataSet
[CODE]...
Another question. . I pull this infor from a view via tableadapter and it comes from several different tables.. How could I save my changes and insert the new records to the appropriate tables>?
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Apr 19, 2011
I setup a strongly typed dataset using the DatasetDesigner in VB2010. I am using the TableAdapter.Insert method to add data to an Access table. Before the data is inserted I need to validate the data using the DataTable RowChanging event.
How can I get the DataTable RowChanging event to fire when using the TableAdapter.Insert method?
Here is an excerpt of code I have so far:
When the Insert method runs, it does not fire the datatable RowChanging or NewRow events.
Imports System.IO
Imports System.Data.OleDb
Imports System.Data
[Code]....
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Oct 26, 2011
I want to track changes in an application. So I've made a copy of the main table in that application, and am accessing both tables in the application using two separate datasets.
My plan was to use the HasChanges method of the main DataSet to get changed rows and then insert those into the copy table. When I run the code I get an error:
A first chance exception of type 'System.InvalidCastException' occurred in MyApp.exe
Unable to cast object of type 'MainDataTable' to type 'MainAuditDataTable'.
Here's the code:
If Me.DataSet3.HasChanges Then
' 'look for each row that has changes, not new rows
' 'insert that row into the auditing table
[Code].....
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Mar 23, 2010
1. Can someone show me sample codes on how to do that ?
2. I encountered a problem with the INSERT sql statement. I keep receiving syntax error in insert statement exception. Is there anything wrong with the statement ?
[code]...
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Jun 22, 2011
I have a DataTable "dt1" that has thousands of rows.
Columns are:
- Type_And_Model
- Val_1
- Val_2
- Val_3
- Val_4
There are only about 30 different "Type_And_Model"-types.How can I insert into a new DataTable (dt2) only distinct "Type_And_ Model" types with the sum of their specific values and total appearance number?
dt1 - DataTable with thousands of rows
Type1 2 2 5 5
Type1 4 2 7 5
Type2 2 2 5 8
Type1 2 2 9 5
Type3 3 2 5 5
Type1 6 2 5 7
Type3 2 7 5 9
Type1 8 2 9 5
.....
INTO =>
dt2 -DataTable with disinct types and their sum values + appearance numbers.
Type1 22 10 35 27 5
Type2 2 2 5 8 1
Type3 5 9 10 14 2
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Mar 4, 2010
I am reading a csv file in to a datatable in vb.net and making a few checks and appending an extra column. I then want to perform a bulk insert using microsofts Oracle.DataAccess (no choice in this) to an Oracle database. what would be the best way to perform this as there is no bulkImport like in SQLserver.
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Jan 8, 2010
Is GUID really unique? I have a webservice that the client application connects to, which generates a GUID. I know GUID are generated using the mac adress of the NIC. Is the NIC in the webservice server used or the client NIC?
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Aug 27, 2011
I need to specify a GUID for each event declared in my class, to be able to generate a manifest for it.
Right now i'm decorating the class with the following:
ComClass("AB849263-E1F7-466B-9BAC-828E67F2871D", "EB2AB5A4-D3AD-4C01-81FB-A73AB0B3848C", "6623B1F2-2D4E-4974-AE51-369F65D47F69")
However when i use the MT tool to generate the manifest, i'm greeted with : "mt.exe : genman warning G81010014: Explicit guid not defined for type NetTest.NetClass+TestEventHandler."
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Jun 28, 2011
I am building a User Management section to a website CMS.The user has a list of users and then clicks the edit button, the system then stored the UserId in a session and goes to the editUser.aspx page which will show the users details.To get the users details I need to convert the UserId session to a Guid so i can get user details.
I keep getting error message:
System.InvalidCastException: Specified cast is not valid.
Dim selectedUserId As Guid = CType(Session("strUserId"), Guid)
Dim mu As MembershipUser = Membership.GetUser(selectedUserId)
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Nov 9, 2011
I have an external database that is feeding information to me. One saves their data as native GUID format and my other data source supplies standard .NET GUID format string. Is there a tidy way to convert from Native GUID to GUID Structure? Also is there any validation bit to determine if a provided value is a Native GUID or not? I can't seem to find any if there is one. The difference is as follows:
typedef struct _GUID
{
DWORD Data1;
WORD Data2;
WORD Data3;
BYTE Data4[8];
} GUID;
Data1, Data2 and Data3 get their byte order reversed but Data4 remains the same, see [url] for more info.
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Nov 29, 2010
I have multiple applications that will be calling a DLL.Is there a way to get the GUID from the calling application without passing it?I would like to use the GUID to verify the parent application and open up rights within the DLL for a specific app but not others.
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Oct 1, 2010
Now i am doing a vb.net desktop application, In which i have to construct GUID. Eventhough having a built-in function in our VB.NET like "System.Guid.NewGuid.ToString()" to get GUID, I need to create the GUID in 30 digits in the below mentioned criteria through vb.net.
Application constructs the GUID (30 digits) using the information from the 5 different sources. The different sources are Current system time, millisecond of the system time, Process ID for the application, system physical memory status and finally the group object identifier number.
8 digits
4 digits 8 digits
8 digits 2 digits
[Code]....
I am not sure how to get the above values to construct the GUID?
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May 28, 2010
We have a .NET app that needs to examine a folder that may contain COM libraries (DLL and OCX.) When we do encounter a COM library one thing we need to accomplish is to extract the GUID from the COM DLL or OCX.Is there a straightforward way to do this with .NET without using 3rd party libraries?
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Jan 12, 2010
Here's the basic premise though: I need to convert a GUID-like string to a different format as shown in these examples:
Original String:
{291B3A3B-F808-45B8-8113-DF232FCB6C82}
Converted String
B3A3B192808F8B541831FD32F2BCC628
[Code].....
It works, but it doesnt seem very well written... Oh and if you are wondering why I wrote my own ReverseString method rather than just using the Reverse extension method on the String class - It seems to return a collection of chars rather than a string (god knows why) and I couldnt find any easy/obvious way to convert this collection of chars back to a string (I thought just CStr would do it but apparently not)
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Jun 2, 2010
First off, apologies, I am probably diving in a bit too deep with this one. I am trying to find the current version of the drivers in my machine. I have a list of the GUIDs and friendly names by using the following code:
[Code]...
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