A new project requires that we have two servers set up to accept requests. Originally we had a reporting system which queried a database and brought back various details to the user. We now obviously need to query two database on seperate servers and merge this information to provide real-time reporting.
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I have a Main Table that contains all the distinct values in a DataTable.DataColumn. also have a Child Table that contains distinct values created by the user.I want to merge the Child Table DataRows that match on the Value column with theMain Table DataRows to create the New Table (shown below).I want to preserve the values in the Selected column of the Child Table.Here is my problem, if I use the DataTable.Merge method the DataRow that contains "888" in the Child Table is added to the New Table, but it doesn't contain a RowState = Added, thus I can't filter for added rows to remove them.
View 4 RepliesI have an access 2007 Database where I store several different "Jobs" such as repair job, data recovery job etc.
At the min I have a form where the user can view a customer's related jobs either by type, or all jobs related to the customer. I'm trying to do this by adding each job type to it's own DataTable, then merging the DataTables into one.
Private Sub rdoShowAllJobs_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rdoShowAllJobs.CheckedChanged
'####################### Procedure Level Constants and Variables ###########################
' Dim dtDataRecoveryJobs As New DataTable
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What I want is for the first column, ID, to contain the primary key from each table, but when the code runs it adds each primary key column from the tables to the end of the AllJobs DataTable! Am I trying to do something impossible here or is there a way around this?
here is the coding for creating a table with book name, author name, isbn , tileetc,........
in the below coding i need the insert , retrieve, and update coding as vb.net coding
DataGridView1.ColumnCount = 4
DataGridView1.ColumnHeadersVisible = True
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I have two databases. One is an SQL database and the other is an Access database.
In the Access database, I have a table with three columns EMPID, FIRSTNAME and LASTNAME.
I load this in my VB program to a table called "EMPID_Table"
In the SQL database, there is a table that has a lot of data that I need to retrieve based on the Employee#, which is the same as the EMPID from the Access database. In my VB program this is loaded into a table called "WagesTable"
How can I merge these tables, or add the columns FIRSTNAME and LASTNAME to the WagesTable
to the correct Employee# in my VB program? I cannot change the SQL database at all, I can only read from it.
Access Query:
Dim EMPID_Query As String = _
"SELECT *" & "FROM [EMPID_Table]"
'This returns EMPID, FIRSTNAME and LASTNAME
'I fill this to a table called "EMPID_Table"
I have this fully working with a massive wall of code and validations, but I want to dynamically add new datatables to shorten my code massively.I am pulling out rows from a database for quotations which are separated into batches. So each batch bring out its quotations and a photo. As I said, I have this working find, but I am not happy with the code.
For Each arow As DataRow In dt.Rows
Dim counter As Integer = 0
While counter < batchmax
[code].....
How do I merge three datatables?
View 17 RepliesI have been out of the VB game for awhile and am now trying to catch up to VB.NET. I know my current solution probably has a more efficient way of doing what I want, such as using LINQ or something. But, I am start at the bottom and working my way up. I essence I have 1 table controlling which columns get added to a working string, that I will eventually export into a text file. My first table has 3 columns(ID, String, Processed). The ID is the index or primary key and the string is the data I need, and Processed tells me if I have extracted that string yet or not( 0 for no and 1 for yes)...
My main problem is checking values in table 1 where I need to add the string. Of course my problem might be deeper in how I am even returning the values from the datatables.
Code:
Partial Public Class StoredProcedures
<Microsoft.SqlServer.Server.SqlProcedure()> _
Public Shared Sub StoredProcedure1()
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I'm looking for a way to combine a field from multiple tables into a single field in a new table. Because the data populating the tables is coming from an outside source, I would prefer not to change the data in the original files. I have a separate table for each year because this is the way the data is provided. The field layout is not consistent from year to year, but each year there is a field that we'll call "score." I'd like to pull the field "score" from each year's table and have it populate a "score" column in a new table along with the year of the data so that all the years' scores are in the same place. Is there a way to do this using Visual Basic + Access?
View 3 RepliesI'm having a hard time joining 2 datatables and have the joined datatable as result. First datatable (labels) holds data including a printerid. Second datatable (printers) holds printer references (id > unc). I would like to have as endresult (joined) a datatable with all data from the first datatable with the field (unc) of the second datatable. [Code]
View 3 RepliesI am trying to create a simple Word doc that when the user presses the button it takes the information in the boxes and tosses it into a template style paragraph. But my issue is that I have two combo list boxes as seen in the picture. I want to have two values in the drop down list as seen in the labels next to them but for the life of me I can't figure out how to do this in Word 2007. In Visual Studio this is much easier but I am work and need to snap this out for the folks at work. Is there an option that I can choose in the properties where I type in the values for each drop down or do I have to add them in at run time?
View 1 Repliesi have retrived this datatable from datasource and i want to add a more colum 'category'basedon the each value of each Role, like if role column has the value '90 daya client' then in the same row it should have a value 'DC' in the category column.n make a temporatry dt1 table but to add related values.
S.No First Name Last Name Role Date
1 Us er1Name User1Name 90 Day Client 11/01/2011
2 User1NameAtt1 User1NameAtt1 90 Day Client 11/01/2011
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I have a login form that consists of 2 text boxes: txtUser, txtPass. Now these are not bound to any data table & I don't what them to be bound. When a new user enters his user name & password, I want to add these on a data table that has two columns: User, Pass. Data table information: Data Source = Login.accdb, Data table = LoginTable, Connection = LoginCn. I use visual basic 2010. So how do I do this?
View 1 RepliesI currently have this working already for one of my combo box's, but when i try to use the same code i get this error ''There is no row at position 6.'' . The are 2 fields in the table asset_type_id, asset_type_name', im trying to dispaly the values in a combo box for the field 'asset_type_name.
the code for ' Friend Sub RetrieveCustomerInformation2()' works but the other friend sub throws the error.
Imports System.Data.SqlClient
Imports System.Data
Imports System
Imports System.Data.OleDb
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I have two table called
1.Register product table
2.Sell product table
Register product table consist of (Product Id (txtProdId.text) and Product Name(txtProdName.text)) NB. All are textboxes Sell product table consist of (Product Name(cboProdName.text) and ProdPrice (txtProdCost.text)). NB. ProductName over here is a combobox.
When someone saves record in the Register product table, items should be added into the combobox into Sell product table.
I am using a string builder to set up an html table row by row so that it can be emailed. I currently gather my information from the database using a data reader and while dataReader.read, I use stringbuilder.Append to add each cell value to the table.The issue is that after about 200 rows, the html breaks and displays a cell value above the table in the email. I have tried changing the cell padding, but this was not successful.
View 2 Replies[code]If I wanted to get Part Name for multiple PartIDs from OrderDetails, how would I go about doing this? Would I use two DataTables? I'm confused as I cannot see an efficient way to do this. The only thing that I can think of is to create a DataTable with SQL:[code]and then maybe use a For loop to take each PartID, create another DataTable to find the PartName for that and then give this to a variable. There could be up to 10 PartIDs to search through and I don't want to have variables such as PartID1 PartID2 etc. [code]
View 2 RepliesMerging Two PDF files OR Merging Two Binary files
View 2 RepliesI have a program that generates a daily hex code. What I am trying to do is get the number of days since the start of the year which I can do using the following
Code:
Dim dtStartDate As Date = "1/1/2010"
Dim tsTimeSpan As TimeSpan
Dim iNumberOfDays As Integer
tsTimeSpan = Now.Subtract(dtStartDate)
iNumberOfDays = tsTimeSpan.Days
Then starting from zero (January 1st) increment the code by the hex value "FF6086A" up to the current number of days. So if done correctly the code for March 17th should be BD0A7F78.
I was wondering if anyone could give me an idea of how I could accomplish this because I seem to be having a problem with arithmetic overflows:I have a program that generates a daily hex code. What I am trying to do is get the number of days since the start of the year which I can do using the following
Dim dtStartDate As Date = "1/1/2010"
Dim tsTimeSpan As TimeSpan
Dim iNumberOfDays As Integer
tsTimeSpan = Now.Subtract(dtStartDate)
iNumberOfDays = tsTimeSpan.Days
Then starting from zero (January 1st) increment the code by the hex value "FF6086A" up to the current number of days. So if done correctly the code for March 17th should be BD0A7F78.
how to add a new row to a table via visual basic 2008, this is what I have been trying and it does not seem to work
newdatarow = dataset.table.newrow
I have an access database with a couple of tables (each with a couple of fields).
in the vb form i have databindsource for two tables each table's fields are shown in textboxes (whose displaymember has been set to each field).
I tried adding a new row to the table like this:
Mbindingsource1.addnew()
textbox1.text="df"
textbox2.text="tttt"
me.Mbindingsource1adapter.update(me.missiondataset.Mtable)
I don't get it, it works just fine for one table but doesn't work for the other which simply doesn't add anything.
I am already exporting datagridview to ms excel and I need to add a row for "Total" but I've encountered a problem because I don't know how to merge the cells for my "Total" since the code for that is placed in a for-loop, there is no exact cells to be assigned for "Total" because it depends on the number of rows in the table. As a result, "Total" is placed in each cell in a row at the end of the table.
View 1 Repliesi am writing a golf score program and i have 18 text boxes. i also have a text box that will calculate the total of all of the 18 other text boxes. what would be the best way to add these text boxes? i have already written code to only except numbers 1 thru 8 for each text box.i started with some code like this:
TextBoxTotal.Text = CInt(TextBoxHole1.Text) + CInt(TextBoxHole2.Text) + CInt(TextBoxHole3.Text)
but if there is no value in one of the text boxes i get an error:Conversion from string "" to type 'Integer' is not valid.so i am guessing i need to check for empty strings and then ignore them
I'm making an application in school where I have to display the values of domestic, international, and total sales of company "Conway Enterprises." Everything seems to be working except it is not displaying the totalCompany sales as a currency. I'm sure it's probably an easy fix but I've been searching the internet and re-reading my book for awhile with no results. Below is the code, as I said everything seems to be working fine aside from adding the two array values and then displaying them as currency.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
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I have two comboboxes in my form (cbAdresse & cbVerwaltung). Choosing the value in the first combo, i get the value from the table into the textbox txtAdID. Now i try to use the value in the txtAdID as the parameter for the SQL command selecting the values from the table (tblVerwaltung). These values must be added to the second combo (cbVerwaltung). So i use the following code for the SQL Compact Client:[code]Using this code i get the following value in my combo cbVerwaltung: "System.Data.DataViewManagerListItemTypeDescriptor".[code]
View 3 RepliesI am trying to run an event which will search through the different files in a given directory. The goal is to have it search for all files that begin with 'SP_', which are .sql files containing Stored Procedures. I would then like to add the full text of these Procedures to an array to be used later. This is causing an error when run, which I believe is because 'FullProcedureArray()', the string array I am trying to load does not have defined boundaries. When I declare it as 'FullProcedureArray(7)', or with some other value, it appears to run fine. But I don't want to have to hard-code a boundary for 'FullProcedureArray'; I would rather let it be defined by whatever the number of files in the folder is.
My question: Is there a way to declare 'FullProcedureArray' without having to give it an absolute value? I may just be missing something painfully obvious, but I haven't worked with this type of array much in the past.
Dim AppDataLocation As String = "C:FilesTestFiles"
Dim ProcedureArray As String()
Dim ProcedureText As String
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I wanna add values from my database to a datagrid, my bigger problem is adding a whole column of values, because I know how to add 1 by 1. So, how can I add a whole column of values from my database?
View 2 RepliesI have DataGridView Named EditRecordDates with column called RecDateApp. Its the 3RD Column in DataGridView--I want to take Value from Textbox called AppDateTextBox and Populate all Rowa in Column with Value
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I would like to add values to my existing db ie to say:
currently in my db table (trade) has column (buy). It has alr a value of 10 to it. Now when the user inputs a value "20" into the textbox in vb.net, how do i write the syntax such that the user input value "20" will add to the db's "10" which means now the db column (buy) has a value of "30"? Been thinking quite long but no ideas so far.