i have a project that can store a different files (.txt,.doc,.pdf,.jpg) in database (.mdf or sql server 2005)
but my only problem is when i view a data from the database there have a error..
the error is "the multi-part identifier ".doc" could not be bound"
this my codes.
'Get table rows from sql server to be displayed in Datagrid.
Private Sub GetImagesFromDatabase()
Try
[Code]....
Is there a way to use vb .net code to retrieve the path name for a file or database?And then use that path name for the connection of a database, so that way when I put my application on a different computer it will be able to still have access to the database.I'm using Visual Basic .net 2008 express.
View 5 Repliesi want to retrieve data from text file and save it to sql database bt i just have to implement some conditions like if there are 3 entries exists in text file with the same ID but i just have to get only 2 of them so in what manner should i write the code....
Dim sbIDs As New System.Text.StringBuilder
Dim sbPunchDateStamp As New System.Text.StringBuilder
Dim sbPunchTimeStamp As New System.Text.StringBuilder
[Code].....
I am using the following Select Statement to retrive data from my .csv file database:
Code:
Dim comm As New OleDb.OleDbCommand("Select *, Left([Street Full Address], IIF(InStr(12,[Street Full Address],'-')>0, InStr([Street Full Address],'-')-1, Len([Street Full Address]))) as StreetFullAddress From " &
[Code].....
I have a report made in Crystal Reports XI. The report is generated and exported to PDF in visual basic script using COM interface. Generally everything is running smoothly, but in one case generation breaks with error: Failed to retrieve data from the database. Details: [Database Vendor Code 9421]
Database used is MSSQL 2005 connected over ODBC to CR XI. When I am opening report with exactly the same parameters in Designer, everything works fine.It looks like it is data related, but it is hard to trace since the whole report is pretty sophisticated. Anyway I spent half a day on crawling over Dr. Google and it seems that he has no clue what might be an issue.
i 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]....
I am using microsoft access 2003 and visualbasic.net. I am trying desperately to add a database using the wizard, and it lets me go through with it, testing the connection is good, but when I try to finish it gives me an error: "<customers>Could not retrieve schema information for table or view customers." What am I doing wrong? I've added databases in the past without this problem using the same Access.
View 12 RepliesI stored rtf format directly into the database. Like in database
[Code]...
I have tried following code to retrieve image from my database.
Dim sEmpID As String
sEmpID = TxtPisno.Text
If sEmpID.Trim = "" Then
Exit Sub
[Code]...
Im' trying to retreive a recordset from a database on MSSQLSERVER 2008.For some reason it doesn't work at all.I try the ado commands (all the ones i've found so far) but i always get stuck somewhere.how to connect to my database and retreive data it would be really wonderfull.The data source binding stuff, all works but no success however with connecting a recordset.
View 4 Replieswe want to retrieve all data in our database but we dont know how to do it.. hmm.. we just use to retrieve data one by one.. its just by the search button.
View 4 RepliesI am using MVC3 and EF 4.1 (Oracle DB). Let's suppose I have:
Public Class Parent
Public Property Id As Integer
Public Property Name As String
[code]....
I want to retrieve all parents from the database and for each parent I can access its children.I want to do the following:
Dim firstParent = (From q In db.Parents Select q).First()
For Each child In firstParent.Children
'Do something
Next
The problem is that I would like to enumerate the children from the youngest to the oldest. Is it possible without the client-side sorting? If yes then how can I achieve that? I know how I could achieve what I want with an SQL query, but I cannot make it work with LINQ...
EDIT:Since this seems not to have a solution in my case and sorting everytime I request data is not an option, maybe there is something I can do when I insert the data to the database? I do not have a control on which order EF saves items to the database when I call db.Save(), but maybe there is some syntax I could use to require ordering based on some property.
I still cant think a way to get my database from the datagrid in form2 and display it on form3..my little program is like a schedule that you'll edit your students class hour,subject and teacher.. then after that when you view your schedule.. you'll see only what subject you'll be at in that student data schedule...i've tried dbgrid.columns(n).text = label1.caption, but i found out that it'll copy the data but only those on the 1st row >.<. ill upload my program here for you guys to have a hint what program exactly im making on.
Here's the link :[URL]
find sql code to retrieve database name from ms access.
View 2 Repliesi have a form with textboxes such as First name, surname, phone number in and each row has an auto number assigned to it. that auto number is the customers reference number. basically i want to be able to enter a reference number into a text box and when a button is clicked i want to extract all the name and phone number from the database and put them into the relevant text boxes. how would i go about doing this?
View 7 RepliesI have manged to save the image using long binary data (ithink) but finding it hard to retrive teh image again. i want to display diffrent pictures as i navigate throw the database
[Code]...
I have creating my application in visual basic using the tables from ms access that I created. In the tables there is field "attachment" with pictures saved in there.
View 1 RepliesI have a csv file with countries and their IP ranges. The numbers are numeric representations of the dotted IP address, calculated with the following formula.[code]...
View 4 RepliesHow to retrieve the particular column row to the text box? I mean how to display it in textbox? The column has got different rows. The code I wrote in vb net is :
[Code]...
known the syntax for retrieve pictures from my sql database using vb.net
View 4 RepliesI have five buttons. Each one has the logo of a website. When the user clicks the button he should go to the website.The five websites are stored in a database (because they need to be changed later during runtime, and the changes saved for the next time the program is opened), in the adress colum.The number of the button corrosponds to the row number of the adress.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
WebBrowser1.Navigate(Me.Table1DataGridView.adress(1))
[code].....
I have the below code, as you can see I have commented out the bit that isnt working. I have a database I have linked in via the VB2008 DataSources panel on the UI, and using the DataSet name created when that was done. Now with the 1.0 I have temporarily set it to function seems to work as expected. But I cant seem to retrieve the decimal value from the database without error.
Function FindFactor(ByVal UnitOfMeasurement As String) As Double
Select Case UnitOfMeasurement
Case "cm"
[Code].....
How can I retrieve values/string from my database using code?
View 1 Replieshow can i save 2 textboxes(string) into 1 file? and when open the file, the string goes to definite texboxes...
[Code]...
I used to be a web developer in vb.net 2008 , now i get involved in some projects with application development. Which is the right way i mean the proffesional way to connect to database , syntax a query and bind the result to datagrid?I see 2 ways , the first is using the wizard i mean drag to the form the databinder from the toolbox and follow the wizard step by step , the second way is the same way i used in web development i get the connection string from app.config , syntax a query inside my code and follow manually steps to retrive the data from a database.which way to use for a large application projects?
View 5 RepliesI write this code to connect to sql database and to retrieve data but its not working
Imports System.Data.SqlClient
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
i am new to vb.net and dont have any idea about using datareader.i am right now doing a project on vb.net and am facing an issue.i have a form, where in i have to select the matching records from the database and show it in various textfields. as far as the query execution is concerned, i have successfully completed it, but i am facing an issue now. Suppose, i have an Id of a student, and he has registered for 3 courses, when i give the query something like select students.studentid,courseid,midtermmarks,finalterm marks from marks,students where students.studentid=course.studentid;it gives me multiple records.my doubt is, when i get multiple records, and which is true(in the case a student has registered for multiple courses), how can i traverse through the resultset and fetch the values in the respective textfields.
View 1 RepliesHow can i retrieve data from sql database and put the values in textboxes?
View 7 RepliesI have a problem in retrieving dateTime object from the database. I have this :
Return CBO.FillCollection(Of ObjectInfo)(CType(DataProvider.Instance().ExecuteReader("sp_SelectAll"), IDataReader))
Then When I want to display the date from the collection I get from the stored procedure. the date was truncated. It shows only the timein the ObjectInfo..there is a field call _mydate as DateTime.
I want to retrieve image from database mysql in vb by using no id. But why I have error "Unable to cast object of type 'System.Byte[]' to type 'System.Drawing.Image'."
This is my codding. I'm using visual basic 2008 and database mysql. picture format BLOB. E.g.[BLOB - 22.1 KiB]
Imports MySql.Data.MySqlClient
Imports System.Drawing.Imaging
Public Class Form_Popup
Private Sub Form_Popup_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code] .....