as a comparative newbie to VB, I am having trouble with a program I am writing in Visual Studio 2005 in order to insert a value into a table I have previously created with SQL Server. Here is the function that is giving me trouble
View 10 Replies
what I am trying to do is i have a table with four records and I want to write it to a txt file. I am running sql server 2000.I am able to connect to my database and I am able to right data to a txt file my only problem is it always returns the 1st row of data.
Dim FILE_NAME As String = "C: emp est2.txt"
Dim conn As New SqlClient.SqlConnection
Dim da As New SqlClient.SqlDataAdapter
[code]....
[Code] my issue is that now i need two cases, first i need a query that will return the date created and modified of the table and i also need to know if its possible to query a list of table names in the database ordered by date created but that have a certain thing in their names. for example the database contains the following tables: [Code] and what i need the query to return is the tables that contain "Data", settings and employees are for the other functions of the program. so the query should return the 4 data tables in order of date created. but i have no idea how to go about doing that in the query, does anyone know how this is done?
View 6 RepliesI am having a remote server it has INVENTORY DATABSE , and also iam having same databse in my local system. I want to populate by local database table with my Remote database table through Vb.net code by click a button. How to do this .
View 1 RepliesI want to add a new table in my accdb and copy the content tfrom an existing table into the new one.
Is there an easy way to do this?
From within my VB.Net program, I would like to write to one specific column of a row in a table in an SQL database, given the row's primary key. What is the lowest-overhead means of doing this? I understand how to create a table adapter, fill a datatable, write to the datatable and then update the database. Is there a relatively simple way to directly access the database table instead?
View 2 RepliesI have a database that has two tables in it. One is a table of items (table1) and the other is the table of current items (table2).On form load I need to generate a random amount of the items from table1 and populate table2 with them. I was trying to do something like this:
[Code]...
I added a table to my Access database. I added that table to my dataset. Using Database Designer VB Studio, my table and tableadapter show up in the design view. The class definition is in the datasetdesigner.vb, and it shows in the object browser. But, I can't reference it in code. I am a newby and obviously missing somethning.
View 1 RepliesThe below code doesn�t cause any error but wouldn�t write into table. Using Access I can write into table w/o a problem.
rowID = numeric
rDate = shortdate
Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As
[Code]......
and in both table i have to insert values and later i need to update one table... the problem is when there is any exceptions in update it need to rollback fully and it also the values which have been inserted must be rollback..
View 2 Repliesi need to make a database application that can write/retrieve cells/datasets from/to a database i buyed a book in there was an example of how to create a database application while debugging i had the "Object reference not set to an instance of an object." error and it highlighted this code
objDataRow = objDataSet.Tables("KlantenTable").NewRow
now the problem is here i declare something later in the code i write to it
objDataSet.Tables("KlantenDataTable").Rows.Add(objDataRow)
[Code]....
How can I update local dataset with mysql database without making duplicates. Assuming I set some column in mysql as primary key, which has unique string.
adapter.fill will just add duplicates, but adapter.clear before that is not an option.
So I want to update if the key column is the same with mysql data and if there is option for ignore adding new row.
I want to read from one Table in a database and write the information to another Table in the same database. It's all connected but I just can't get it to work at all.
View 4 Repliesi'm using the following code in order to send the bytes of a picture into the stream table:
Dim FirstColumnNames As String = imTable(0) & "_Code, " & imTable(0) & "_Price, " & imTable(0) & "_Title, " & imTable(0) & "_Type, " & imTable(0) & "_Height, " & imTable(0) & "_Width, " & imTable(0) & "_Comments "
Dim FirstFieldsValues As String = "'" & imParam(1) & "', '" & imParam(2) & "', '" & imParam(0) & "', '" & imType.ToString & "', '" & imHeight & "', '" & imWidth & "', '" & imParam(3) & "' "
[code]....
The tables have the fllowing stracture Thats the First Table:
myCommand = New SqlCommand("CREATE TABLE " & TablesStat(0, 0) & _
" (" & TablesStat(0, 0) & "_ID int NOT NULL PRIMARY KEY IDENTITY(1,1), " & TablesStat(0, 0) & "_Code varchar(20) NULL, " & TablesStat(0, 0) & "_Price money NULL, " & TablesStat(0, 0) & "_Title varchar(50) NULL, " & TablesStat(0, 0)
[code]....
End the second table is:
myCommand = New SqlCommand("CREATE TABLE " & TablesStat(1, 0) & _
" (" & TablesStat(1, 0) & "_ID int NOT NULL PRIMARY KEY IDENTITY(1,1), " & TablesStat(1, 0) & "_GUID UNIQUEIDENTIFIER ROWGUIDCOL NOT NULL UNIQUE , " & TablesStat(1, 0) & "_" & TablesStat(0, 0) & "_ID int FOREIGN KEY REFERENCES " & TablesStat(0, 0) & " (" &
[code]....
My problem comes when i'm trying to read the 'filePathName' and the 'fileToken'the privious SELECT GET_FILESTREAM.... return me only one colomn to read the colomn 0 which has the GUID in binary format I know i'm doing something wrong but i don't know what My issue is that i'm not geting th 'filePathName' and the fileToken'?
I want to write a method or function that help me for insert into database.[code]...
View 2 RepliesHow to use SqlTransaction in .net 2.0 so that when I start reading data from a table, that table is blocked for others (other programs) to read/write to that table? If SqlTransaction is not a good option, than what is?
View 1 RepliesI would like write Date and Time from Now() To field fDT in Table Tbl MS Access 2007 but I can't:
msAccessConnection.Execute("INSERT INTO Tbl (fDT) VALUES ('" & DateTime.Now & "')")
I coded in it along time ago, back in middle of the 90's, but not heavily, so I don't remember that much, and never really worked with databases or file import/export. I'm trying to write code in to take my table or recordset thats active and export it to a XLS file.
[Code]...
I want to write data from a DataGridView to an MS Acces Table, BUT I want e.g. cell in DataGridView to be cell 1 in the Acces table.
View 4 RepliesI have created vb.net program to write data into MSWord file.First the data will be loaded into datagrid and on click of save button, it starts writing into a word file.The code which i used to write is as follows :
'Some code
Dim oWordApp As Microsoft.Office.Interop.Word.ApplicationClass
Dim oWordDoc As Microsoft.Office.Interop.Word.Document
oWordDoc = Nothing
[code].....
I have large amount of data to be saved into ms word file. more than 1000-1500 records at a time,so is there any better methods to save the data more fastly ?
I want to transfer not EXPORT, all the datas from a table to a Excell Spread sheet thru vb.Fir eg Table name is Lab1 have 2 columns.
Col1 = Name
Col2 = Age
I want to write all the datas to Excell as in:
Name Age
Tom 29
Sally 38
Sam 60
I need to Update Access Database Table with Data from a Different Table. Not all the rows of original Table to be Updated will be affected. How do you loop through the 2 Tables to do the required Update.
The Table to be updated is called "RecordList" and Table with new Data is called "RecListReport".Every attempt I've made won't work. I tried to Use 2 Datagridviews but couldn't get it to work right.
NewTestConn()
Dim Testconn2 As New OleDbConnection(NewTestConn1)
Dim da As New OleDbDataAdapter
[Code]....
I am creating a database in VB.NET for a movie rental place. I currently have three forms;
Member Information
DVD Information
Borrow DVDs
What I would like to do is when I am viewing a member's details, if I click a button 'Borrow DVD for Member', the member's ID number transfers over to the Borrow DVDs table in the Member ID which also would hold some information from the DVD Information table, but I'm sure if i can figure out how to do this firstly, I will be able to apply the same rule and work it out myself.I have been trying to use a query statement like;
INSERT INTO [Borrow DVDs].[Member ID] [IN goodstuffvideos.mdb]
SELECT [Member Information].[Member ID]
FROM [Member Information]
but that has been coming up with error codes and completely not working.
Borrow DVDs table fields are: Borrow ID, Member ID, DVD ID Number, Hiring Fee, Borrowing Limit?
DVD Information table fields are: DVD ID Number, Title, Rating, Hiring Fee, Borrowing Limit Member?
Information table fields are: Member ID, Family Name, Given Name, Address, Town/Suburb, Postcode?
The error coming up is; Error in INSERT statement. Unable to parse query text.And under that it says The query cannot be represented graphically in the Diagram and Criteria Pane.
My assignment was to Write a program to display a multiplication table for the integers from 1 to 4. So i did the code And got
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim n As Integer
[Code]....
The only problem with the code is that it displays only the integers 1 , 4, 9, and 16 when ran.
I am looking for some code to help me backup up my table data to a text file using vb.net, I just want to write all the rows in the table to the text file.
View 1 RepliesHow do i read information from a mysql server and write all info on table name links to a file?
View 3 RepliesI am using the tutorial posted here for my database testing. I have gotten it to display the data using a messagebox but it just goes through them 1 by one. I want it to display all the data from the database in a table on my form.
Using connection As New SqlClient.SqlConnection("Server=71.200.87.112MySQLExpress; Database=database_test;User ID=sa;Password=greddy6;Trusted_Connection=False;")[cod
I am trying to copy a table from a network database to a local database. I used DAO and could check if the network table existed using a function that tried to assign a TableDef object to the table in question. If there was no error then I assumed that the table existed and the function returned true...Or it would error out and return false.I could then proceed with the copy or not as the case may be.I am converting the code to ADO.net and need to know how to check for a table. [code]
View 1 RepliesI have a form that cycles through a database table with next and prev buttons Database name is "China.accb" and the table is called Users Table Users has two fields, both text.One is called UserID and the otheris Password"am getting an error message when I try to click the next button that states: "Unable to cast object of type "System.String' to type System.Windows.Forms.Textbox'. I've highlighted the line causing the error below
Imports System.Data.OleDb
Public Class frmUsers
Dim intMaxRows As Integer
[code].....
I am attempting to write the entire contents of an ADO.NET DataSet to an Excel 2007 spreadsheet and, while having partial success, I am unable to dump the contents of the DataSet into the .xlsx file. "Partial success" meaning that I can generate the spreadsheet(s) ok, but cannot get the DataAdapter.Update to work.
[Code]....
