Import/Merge A Particular Column With Data From One Data Table To Another?
Apr 6, 2011
I want to merge or import a column of data from one data table created in VB.NET to another data table's 'same-named' column.The destination data table has all the required columns created before hand but the source data table contains one column at a time, whose name is the same as that of one of the columns in destination data table.Whatever coding I have done for the same till now, results in blank rows at starting. The destination data table looks like this:And I want it to be displayed it as:
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Feb 8, 2009
I am currently using vb 2008 and access 2003 as back end database. I am trying to import excel data to a data table. my excel and access table header & columns are same. I was trying to do this.........
[Code]...
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Feb 4, 2009
currently using VB 2008 and access 2003 , I want to import an excel file to a data table.
how top go ahead and try and start with this kind of thing. Thats y i coudnt even give you the sample code to correct.
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Aug 7, 2010
SQL Server has a Data Type of "Float". Visual Studio has a Data Type of "Decimal". In other words, if I have a variable in a VB.Net app that is defined as a "Decimal" ...can I move that value into a SQL Server Data Table column defined as a "Float"?
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May 14, 2012
how to get selected row column value from data table to textbox in vb 2010?
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Nov 22, 2011
I have already binded a data source from Access to my visual basic program but need to add a True/False column to two of the tables. I could do this manually in access and re-bind the sources but that would take up too much of my time so I wanted to know if I'm using the proper code to add a column to the data table directly from VB? Here is the code I want to try but I don't know where to place it?
OleDbCommand = OleDbCommand("ALTER TABLE tableName ADD
FieldName DataType");
(something).Connection = OleDbConnection;
[Code]....
I'm not sure what goes into the "something" parenthesis and where this code must go. I already tried editting through the data designer but although it shows the column in the DataGridView, it does not save any data or the column into the actual access file.
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Apr 27, 2012
Attempting to run an SQL statement to UPDATE a column in a table with new data. The column being updated is defined as varchar(40) and the new data is 41 bytes (varchar(41)). I get a generic 'data will be truncated' error message, but no detail on which column caused the problem. I've attached a sample VB program to illustrate the issue. In this scenario, Company is defined as varchar(40).
My question: Can I get a more detailed error message? i.e. can I get an error message that tells me the row and column that the truncation occurs in? Often times, I may be updating hundreds or thousands of rows and only one value in one column from the source file is too large for a database cell. As a related question, does each OLEDB provider create its own error messages. i.e. will the MS SQL Server OLEDB provider potentially give different text in the error message than say the MS Jet OLEDB provider?
Imports System.Data.OleDb
Module Module1
Dim cn As OleDbConnection
[Code]......
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Jun 12, 2011
have a little problemn. I have to tables codMP and Content.Display like this.codMPnameInx? - 20 - here i want to sum the column from the second table wherecodMP = with what is in the column codMP. The same for the
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May 25, 2008
I'm realy new to this VB & Db programming#..I have two tables, one has the Vendor details, the other has all past and current PO details for each Vendor.[code]This needs to be done befere the 'For Each objDataRow In objDataTable.Rows. As the Dataset values will also populate another check Boxlist for 3rd Party.[code]
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Jun 8, 2010
This should be an easy one, looks like I got myself too confused.I get a table from a database, data ranges from varchar to int to Null values. Cheap and dirty way of converting this into a tab-delimited file that I already have is this (shrunken to preserve space, ugliness is kept on par with original):
da.Fill(dt)
' da - DataAdapter '
' dt - DataTable '
[code].....
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Dec 5, 2011
UPDATED: Here is the SP, it doesn't match exactly because of ongoing testing, but you get the jist. Some fields are commented out because of testing...
[Code]...
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Oct 15, 2011
I have a gridview loaded with data from my database and a gridview swapping function which after exchanging data between rows with a column call "Priority", I want to save these changes back to my database. Only the "Priority" column value will be change, how do I update only that Column of my dataset table to my SQL database?
[Code]....
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May 15, 2011
How Can I determine if my data table column is varchar or nvarchar?
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Aug 13, 2009
I am trying to set autocomplete for a textbox using data from a column in a table an Access database. Some of those records in the table have no values. I have set the AutoComplete Mode property to SuggestAppend and the AutoCompleteSource property to CustomSource. When I run the application nothing happens when I type into the textbox. The dataset is called DatabaseDataSet and the table name in the database is called Simple and the specific field/colum is called SIM_TAG1
'Create customsource for tag textboxes to suggest tag terms based on what is in database
Dim oTag As New AutoCompleteStringCollection()
For Each term As DatabaseDataSet.SIMPLERow In Me.DatabaseDataSet.SIMPLE
[code]....
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Jun 12, 2011
i would like to ask how do I subtract a value from my column Quantity(data type is integer = 18) in my inventory table if a customer will want to have 2 orders and of course 18 - 2 will be 16. how will i do this?
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Dec 15, 2009
i need to import a Single Column Excel File to an Existing SQl Server Table.
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Sep 28, 2011
I just started using Visual Basic and Visual studio and I was wondering how can I import .xlsx data into the data grid view.
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Sep 14, 2010
i'm trying to make my data easy to be read. act, it is difficult to me if the data just fix as in the access database
as example:
FROM this:12 To: 1234 34
*nutsxiera i already alter the example...some correction should be made
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Jan 31, 2010
i already forget how to start when write the programming using vb.net.i already try to study back the basic of vb.net.but the step to build system merge using vb.net i didn't how to start it.
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Jun 9, 2011
merge a data from portrait to landscape..
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Dec 17, 2010
Is it possible to use VB code to code an application that can merge Hex data from a small (50kb) .dat file with the hex data from another small (50kb) file? This would require designating specific offsets, which I can pre-program, but If I could have user input this would be preferred.
Example.
Hex_1.dat
00 00 00 00 00 11 11 11 11 11 (Offset = 5)
Hex_2.dat
22 22 22 22 22 33 33 33 33 33 (To offset = 5)
Result file
Result.dat
11 11 11 11 11 22 22 22 22 22
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Aug 15, 2011
I have a DataGridView which populates from an SQL query just fine in default mode
using these table names
[firstName] [varchar](20) NOT NULL,
[lastName] [varchar](20) NOT NULL,
[code]....
I have edited the column headers and set the column names to the same values as my table names yet the data is not showing in form load I have set datagridview.AutoGenerateColumns = False I know the data is there if I delete datagridview.AutoGenerateColumns = False then the data is shown with the default headings?
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Jan 20, 2011
I have three table and I want to put the three table's data in one variable and from that variable i will produce the datatable and then want to write the data in CSV file.I am Following this step..
Void
GetDetails()
DataClasses1DataContext
[code].....
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Apr 19, 2011
I have a list of data as shown below
Original Data
Genre Name Year
Comedy Shrek Forever After 2010
Drama The Karate Kid 2010
Action Iron Man 2 2010
[Code]...
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Dec 8, 2010
i want to create a table that include a current year data and as well as previous data to be compare. here is the example of the table that i want to create: but i want to compare one of the annual data with the previous year. as example i want to compare between the data of current AR of 2007 with the current AR for 2006, Current AR of 2006 with current AR for 2005 and go on~, but i have no idea how to do it.
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Aug 6, 2011
I have two data tables. the second related to the first. Using a datagridview for the first table I am able to enter and save data ok. if I run the code twice in a row the data is still there. When I edit the data in the related table in it's own datagirdview the data is there and displays correctly, but on running the code a second time the related data is lost. In both cellendedit events I am using
Me.table.Update(Me.FigsDataSet.table)
Me.Validate()
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Dec 18, 2010
I have a data logging application that stores data in a table in a MySQL database. Data with a TimeStamp is logged into the table anytime the data from the sensor changes. This means that there maybe 2 seconds between data points or there maybe 20 seconds between points depending on how the data is changing.
When I need the data I have 2 dates and use this command to fill a table..SELECT FROM myTable WHERE timeStamp > date1 AND timeStamp < date2 This gets all the data that has a TimeStamp between the given dates, but in most case the first date in the returned table will be after date1, so I need to get the data from one row before the date returned in the table to know what the data was at date1.How can I get the data row that immediately precedes the returned data set?
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Nov 11, 2010
The control comes up blank??Imports System.Data Imports System.Data.OleDb Public Class Form1
[Code]...
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Sep 28, 2009
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it?
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Sep 28, 2009
I would like to know the best, or standard, way to accomplish real-time client updates in a small multi-user application using an access data table as a data source.
Specifically, this application will be used by 3-4 people. It uses a datatable which is filled on form load and bound to a datagrid at design time. The datatable is stored on a shared drive. The data table on the shared drive is updated in two ways:
1) Users can update the datagrid which then updates the datatable on the shared drive via the data adapter's Update method.
2) A server application does some work on some text files, periodically updating the data table.
I need the clients to reflect the changes to the data table on the shared drive as closely to real-time as possible. I know that the data table stored in memory on the client is disconnected from the data table on the shared drive, so I must query again to get the updates.
I have two questions:
1) Is there an alternvative model I can use which is connected, and which will automatically reflect the updates in the data table on the shared drive?
2) If not, what is the best way to check for changes in the data table (so I can know when to call the data adapter fill method)? I am planning to poll the drive for a change to the .mdb file, raise an event and then fill the data adapter when the event is triggered. I am using this method successfully now to check for changes to a text file in another application, and I know how to implement it
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