Read From Multiple Tables In Data Reader
Mar 18, 2010I'm trying to read from two tables in mysql:
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Or even other techniques on achieving the goal of reading data from two tables using data reader? This is a winform, not a web form
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Choose Specify Data To Be Read By Sql Reader?
Aug 16, 2010I have the first form and create 5 checkboxes which are connected to my db. Whichever checkbox is checked and the value will be inserted into the db (value: 1; data type: tinyint).And now, the second form will pull out the data base on the which checkbox is checked when the button is clicked. But for somehow i got stucked at the following code.
The first form:
Dim nValue As Boolean
If chkbox5.Checked = True Then
nValue = 1
[code].....
EID SDK - See If Card Inserted Into Reader Then Read Out Data
Mar 14, 2010I am trying to use the eID SDK (for using the belgian ID-card) in VB. It's supported but I can't get it to work. I have never worked with sdk's before. I did manage to get it to work in c++ in console but I really need it in visual basic. Also the VB examples that come with the sdk are made in an older version of visual studio and when my version tries to convert them they don't work. I want to use the sdk to see when a card is inserted into the reader and to read out the data. (both i got to work in c++ console).
View 2 RepliesStream Reader And Writer - Read Data From A File
Jan 27, 2009I am trying to make my application read data from a file. Then save the data back. However I keep getting an error which says the file is still open so cannot be edited. I also read that there is an issue with the streamreader and streamwriter do not close the program straight away. I was wondering if anyone had a way around this or any alternative ideas. Heres my code so far!
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Find A Program That Can Read Data From A USB CCID Card Reader?
Oct 14, 2011I have been looking all over the net trying to find a program that can read data from a USB CCID card reader.
after several hours and several pages of useless info i thought maybe there is a way i could create a simple progeam in VB to read the data, so i started another long search for info also to no avail.
Does anyone know of anything like this or if its even posable?
Using A Data Reader To Read An Excel Spreadsheet And Want To Update A SQL Express Table?
Mar 10, 2009I am using Visual Studio 2005. I am using a data reader to read an Excel spreadsheet and want to update a SQL Express table. The datatypes in this table mimic a software application I will eventually be passing data to and are listed in the comments in my code. No matter what I do or change, this will not run. I even populated my spreadsheet with zeros and this will not run. I have found many suggestions on the web and tried changing things but nothing seems to work. I also don't know specifically which variable is causing the error or the proper way to make sure there are no blanks in this spreadsheet.The error says "conversion from string "" to 'Double' is not valid Here is my code:
Public Sub btnUpload_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpload.Click
'Connect to the Excel spreadsheet
Dim xConnStr As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & txtFileName.Text & ";" & _
using a data reader to read an Excel spreadsheet and want to update a SQL Express table
Add Data From Vb To Multiple Tables?
Oct 2, 2009i wanted to add data from a single form in vb to two tables in access but an error appears saying that the field customer_ID down to Contact_Number doesnt belong to the table record, though it really doesnt belong to that table.. but i already indicated the table for the customer_ID down to Contact_Number, which is Customer, in my sql statement...
Public Class Refill
Dim connect As New OleDb.OleDbConnection
Dim sql As String
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Multiple Data Tables Vs One Grand Data Table
Jan 25, 2011if it affects the run time of a program if I were to have multiple data tables as opposed to one data table with all my data in it? I am trying to minimize datagrids and just use code to access table data, in hopes that it will speed up my program. But I am ignorant if multiple tables vs 1 main table will make a difference because there will still be the same amount of overall data present in my program one way or the other....?
View 3 RepliesAdding Data In Multiple Tables
Mar 20, 2010This is a winform and I'm using mysql as a database, here is my code:I'm trying to add data into multiple tables.[code]Index and length must refer to a location within the string. Parameter name: length
View 2 RepliesCombine Data From Multiple Tables?
May 12, 2009I am used to creating a data set with data from one table, for instance:
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Now I am needing to add a second table. For instance, my second table "EQUIPMENT" has a field called "DESCRIPTION" that I would like to add to my dataset. The "WORKORDER" table has a field called "EQNUM" which is what the "EQUIPMENT" table uses as the primary key. how to combine these into one dataset?
Dataset That Contains Data From Multiple Tables?
Apr 14, 2009I have a VB.Net dataset that contains data from multiple tables. how to query data out of the dataset. I want to run SQL-like queries on a dataset to extract data that fits a certain "where" statement.
View 3 RepliesRetrieving Data From Multiple Tables?
May 25, 2011i've a form which displays data from multiple tables of the same employee(personal details, salary details, etc...) and have a common field 'Empnumber'I want to retrieve data from all of them to be displayed in the form. Am not getting the sql statement required for this. the code i use is, rs.Open("Select * From employeetable,payroll,misc where employeetable.EmpNumber='" & text1.Text & "'", CONN, 3, 3) where text1 has the empnumber for which details are required and empnumber is the common field in all the tables...
View 2 RepliesSaving Data To Multiple Tables
Dec 30, 2009I fill DataSet from Access Database then create Datagridview to display data. My problem is how to Save Data back to a different table in Database then the one used to create the DataSet? I'm using Visual Studio 2008 and Visual Basic 2008.Original Table used to fill DataSet is called RecordList the new Table will be RecordListReport.
View 8 RepliesSql - Reading Data From Multiple Tables (VB)
Nov 28, 2011I'm trying to read data in Visual Studio from multiple tables. How do you read data from different tables? Do I have to create
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Displaying Data From Multiple Tables In Access?
Oct 11, 2009how to display data coming from different tables in access in a form?...the case is this:
3 tables in access:
AddBook(tablename) - ISBN(primary key), Book_Title, Author
Student(tablename) - Student_ID(primary key), Student_Name, Course, Year
Transact(tablename) - Transaction_No(primary key), ISBN(foreign key), Student_ID(foreign), Date_Borrowed
i think you can already picture it out... so what i want is to display data from Transact table and also display the data from Student and AddBook table base on the value of the foreign keys in Transact table....
How To Handle Retrieving Data From Multiple Tables
Jan 4, 2009I am new to VB and I have a database that has three related tables. These tables show information about computer engineers.
table one is engineers details
table two is engineers allocated
table three is jobs
My form needs to have buttons where a user can obtain information
View details of all Engineers
View Names of all the Engineers working on a specified job.
Add a new engineer
I have set up the connection to the data base using the wizards and also made the dataset. How to handle retrieving the data from multiple tables.
Here is a screen shot of my data set
Sql Server - Reading Data From Multiple Tables
Sep 10, 2011[Code]...
I have Memberships and Bookings tables in database containing an attribute cust_id which is primary key in Memberships and reference key in Bookings. When i am executing data reader I want it to read cust_id values from membership table but it is reading it from the bookings table.....
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Update Multiple Tables Data Using Sql Command?
Jun 4, 2012I want to update data within multiple tables using sql command object. I have following codes which would not be updated the data.[code]...
View 4 RepliesBind Data From Multiple Tables To One Binding Navigator?
May 28, 2010I'm using a SQL database and I want to bind five tables to one Binding Navigator.
View 3 RepliesCannot Update TableAdapter Data From Multiple Access Tables
Mar 24, 2009I'm an experienced Office & VBA programmer, I am new to .NET programming. I'm in the process of migrating an Access 2007 database application from Access to Visual Studio Visual Basic project for further development. In particular, I am interested in using .NET controls to display data in a user-friendly hierarchical grid control.The data for each hierarchical display is stored in two separate tables (I call them tblData and tblExtraInfo), and then I use a query to join the data and prepare for display (I call the query qryBOM).
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Invalid Attempt To Call Read When Reader Is Closed (While OleDbDataReader.Read)
Sep 1, 2009There are already multiple threads about this, but i don't have the knowledge about the different SQL databases/methods to make heads or tales from it.I am using an OleDbDataCommand, an OleDbDataReader and the following code
Dim Query2 As OleDb.OleDbCommand
Dim RetVal2 As OleDb.OleDbDataReader
Query2 = New OleDb.OleDbCommand("Select [section], [title], [id] From " & DtSections & " Where [volume] = " & volu & " And [chapter] = " & chapter & "", AccessConn)
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value)In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. Type) Object?
SQL Reader With Two Tables - Get Records From Table1?
Mar 9, 2011I'm trying to utilize two tables with SQLReader but it's not working as planned.This is a simple explanation:
Table1 has columns c1 and c2, both integer.
Table2 has column data that is string (numeric with hyphen separators).
A typical record has this: : 20123-456-9834-167
The user inputs two integer values in variables uf2 and uf3.I want to get records from table1 that match the criteria:
1. Column c2 equals uf2.
2. A table2 record is found that:
a. has "-" + c1 at the end. (e.g. If c1 value is 167, the record above matches.)
b. has "-" + uf3 elsewhere in the record. (e.g. If uf3 value is 456, the record above matches.)
There is no "relationship" between the two tables.
The pertinent SQL code I have tried is similar to this:
dim strQuery as string = "SELECT c1, c2, data FROM table1, table2 WHERE " & _
"c2 = @f2 AND data LIKE '%-' + c1 AND " & _[code].....
Combining Data From Multiple Tables Into One Table For A Presentation Software?
Oct 5, 2009I am combining data from multiple tables into one table for a presentation software. I am doing a select statement and running a loop. Inside that loop I have multiple selects and I build a datatable an enter the data into the main table. There is a ton of records and it takes forever.
'Requisition Demands
InsertStr =
"SELECT COUNT(*) FROM Requisition WHERE (DMD_DT = " & dateVal & ") AND (QTY_REQ > QTY_PEND_CANC + QTY_CANC + QTY_REJT) " & searchvalString
[code].....
Displaying Data From Stored Procedures With Multiple Tables Into Textbox
Feb 5, 2012SELECT
Login.LoginID, Student.[Student Name], Student.[Student address], Student.StudentID
FROM
Login
INNER JOIN
Student ON Login.LoginID = Student.LoginID
WHERE
(Login.username = @user) AND (Login.password = @pass)
RETURN
How do I display the Student Name, Student Address, StudentID, and LoginID into multiple textboxes?
Multiple Tables In Visual Studio 2010 (VB) On Data Grids
Feb 13, 2011I have looked at the answers in the forum and some seem dated. I an an old vb2 person and need to move up. I understand sql very well and use complex queries. First test project and trying to add multiple tables to a data grid (Only Form in project).I used the Data wizard to add the Access data base and worked by way through to near the end. The query works in the wizard and returns the correct rows. The error message is "The solution returned by the new query differs from the base query."
During the creation process I selected all the tables. Reading some of the old anwsers I get the inpression that VB 2010 does not handle multiple tables in a datagrid (forum items go back to version 2008).
Read Smart Card Data Using Card Reader?
Dec 23, 2009i want to read data from smart card using card reader.i need vb.net code help as well as total process that mean what dll/exe will be needed and how can i determine that the card is inserted or ejected from card reader?
View 3 RepliesExporting Data From Multiple SQL Tables To Different Flat Files Using SSIS Script Task
Jun 2, 2011I am trying to create a datagrid and export the contents to a text file using VB.NET and I am doing this inside an SSIS script task in order to automate the process to export a dynamic table to text file. I don't get any error and the files are created but the files are empty. [code]
View 2 RepliesVS 2008 DataAdapter.Update To DataTables With Multiple Base Tables (Joined Tables)?
Jul 12, 2011have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter
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Read Data From Multiple Files?
Dec 9, 2009I have 500 odd csv files that I need to pick up and load into a table in Teradata.How do I combine this 500 files data into one file Or is there a script that will go and fetch data from each file and load it into the table.Here are more details.I have a bunch of hotels and the end of each day all the hotels dump in one file into a common folder.
Like
D:CorpHOTELSACCOUNTSREPORTINGUSA
Here I get files in the following format.
Hotels_Sales_Graph_level_20080529
Hotels_Sales_Graph_level_20080530
Hotels_Sales_Graph_level_20080601
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Now I need a script to pick all these files data and load it into one file so that I can use this file to insert data into a table using a fast load script i already have.I have a script that will read this file copy it to a new location and archive it.I can use this final file to load my table.But I dont have a script to read all these files and also read the new file that comes in everyday and load it into one csv file.
Use XML Reader To Read It As Its Quite Large?
Mar 6, 2009I have following XML structure, how can i use XML reader to read it as its quite large.[code]...
View 3 Replies