i have written the following code to retrieve a value from a sql database en return it in the function.it keeps giving me the following error "executereader:connection property has not been initialized"
View 1 RepliesIn an errorhandling messagebox inside my own Sub/Function procedures I want to refer to the NAME of the Sub/Function, so I will know where the problem is located when the error messagebox pops up.How do I retrieve the name of the particular Sub/Function that I am in at the time (in the Editor)?
View 2 Repliesi want to call a function that can convert code key-in by user into a set of code..i call function convertCode(coop,portal) in another private sub call SEMAK.. after the function executed, how can i get the latest value for portal to use it in sub SEMAK? after i convert coop n portal, i want to use the latest value in portal. but in sub SEMAk it still take the value that i declare in sub SEMAK that is Dim portal As String = ""
the function is
Private Sub convertCoop(ByVal coop As String, ByVal portal As String)
Dim conn1 As New SqlClient.SqlConnection("Data Source=10.0.0.70;User ID= sysadm;Password=sysadm;Initial Catalog=SPGA_Latihan;Persist Security Info=True;")
[code]....
I am looking for a function like this:Function(Line x) must return the line x as a string (where Line x is a line of code from Form1 I specify)
Example:
Function(Line 10) returns the code (instructions) from line 10 as a string
If Line 10 from Form1 is: "if a=b+c then...."
Function(Line 10) returns "if a=b+c then...."
I am currently using a recursive function to retrieve all the files/folders within a directory.Sometimes this takes a while. I am wondering if I am able to calculate the total number of files/folders within a directory before retrieving the filenames so that I can implement a progress bar?
View 1 RepliesI wrote a Log class that details the exception, including the method name and its arguments list,but I couldn't find any way to programmaticly retrieve the arguments values.in some forums it was said that its impossible mission. I find it very odd.my arguments list looks like:
argA As String = ?
argB As integer (Opional, Default value = 2) = ?
etc. only actual values are missing.
I have three tables in SQL server which I would like to show and access on a form. Table 1 contains account data, address, contact details etc. Table two contains data attached to a Person, tel no , Mobile no, Email etc. Table three contains details on what awards the person holds, i.e. one person can hold several awards.
Therefore I have a one many relationship between the first two tables and a one many relationship between the second two tables. This is set up in SQL
The first two tables are shown on a form, table 1 via a set of text boxes, table 2 via a datagrid control.
I would like the functionality whereby I could select a row in the datagrid showing the persons name and find the Persons_ID number then use that as a filter to a second datagrid view so that only the selected persons awards show in the datagrid.
i want 2 select data from data gridview and want retrive that data into another form in to the textbox ...is it possible ? i 'm doing like this for that
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.[code...]
I want to obtain the individual data in rows and columns from my database. I mean after loading the data in a data table.... I think I need some attributes of the data table, so as to obtain data from the rows and columns.
View 3 RepliesI have properly configure the database connection. I wanted to get data from the database to 2 text boxes.
[code]...
1. user writes he's details (textbox1 for username, textbox2 for password)
2. user hits "Login"
3. application tries to retrive data from sql server. (in this case localhost/127.0.0.1)
4. application retrieves data from test/tables/members
5. if the specified account information matches the servers data, it will let you through to the next form. Else, it will give an error that the user/pass is incorrect.
Now look, the table looks like this
[id] | [username] | [password]
1 username password
I am trying to execute the code below to list the select item in a checkbox to the body of the mail
Dim CheckedValues As String
For Each item In txt_panview0_ddinput1.Items
If item.checked Then
[Code]....
How to retrieve data from database using Web services on VB?
View 5 RepliesI am retrieving data from a csv/txt file using oledb driver
ConnString = "Provider=Microsoft.Jet.OleDb.4.0; Data Source = " & System.IO.Path.GetDirectoryName(strFileName) & "; Extended Properties = ""Text;HDR=YES;FMT=Delimited"""
strQuery = "SELECT * FROM [" & System.IO.Path.GetFileName(strFileName) & "]"
In the last line I am getting following error if the filename is large
Is not a valid name. Make sure that it does not include invalid characters or punctuation and that it is not too long.
My question -
Is there any limit to filename or the select query or there is some pattern which I need to follow?
I need to retrieve data in array. We are asked to get id number, name and section and put it in a array and then if we clicked retrieve button it will prompt an inputbox requesting for the id number of students and after we input the id number of the student the name and section will be in the msgbox.
View 1 Repliesi created a database in my visual basic . and in this database i created 1 table...
i created also a query which is calculating the SUM of a colonm..i want to know how i can do to retrieve this data inside a textbox whos is on my program..ans of course i want that data to be update everytime i inserte data in this colonm...
we 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 have managed to connect vb.net to Microsoft database access but now i am struggling with the code to authentication log in. when i log in to the form i want it to display the user name in the label in vb.net form.
View 1 RepliesI want to retrieve data from a this link:
[URL]
I have used this code:
Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
[Code]....
I'll create Database in Visual Basic using MsAccess.
But I want to know that how can retrieve from Access which selected fields are needed...
For example., I've 10 fields in student mark list,
ie, Rollno, Name, ..., Grade...
From those 10 fields, I want to show only 5 Fields in another VB form...
my program has a datalist which list out all the item from datasource and display the detail information on different textbox the problem happened while i click "vitamin a" from datalist, and the "supplier name"will display "daily medicine",then when i click "vitamin b", it will display "sunny medicine",finally when i clicked back "vitamin a", the supplier name still remain "sunny medicine" which mean it does not change from "vitamin b"?
View 3 RepliesI have 2 checl boxes bol1 and bol2 and i stored a record after ticking one of them and now i want to make a function to retrive what i stored in the access data base in check boxs as well according to the ID. the table name is check_table and the columns names are "bol1 , bol2" the type is (yes,no).
View 3 RepliesHow can i retrieve data information displayed on the hyperterminal or is there any way to redirect the information being displayed on hyperterminal to a file?
View 2 Replieshow to retrive thousands of data from access faster
View 3 Replieshow to retrieve data from mysql using vb.net as frontend. I created database in mysql and able to insert data from vb.net but i dont know how to retrieve data from mysql.
View 8 RepliesI am making a survey-application in winforms that is connected to a MySQL database. Now I want to show the alternatives of a question, and how many answered each question. I have a table for alternatives called tblAlt and a table for answers from users called tblAnswers.
There are only 5 alternatives for each question. Is there a way to get each alternative, and how many answered each of them with one query?
This is what I made so far, but this is definitely wrong:
SELECT tblAlt.altText, Count(tblAnswers.answerID)
FROM tblAlt, tblAnswers
WHERE tblAlt.questionID = " & CInt(questionID) & "
[Code]....
I have a combo box on a form named cboGender, I am using a data reader to retrieve data into the combo box as follows[code]...
the value of Gender shows in the combo box if the Drop Down Style property is Simple or Drop Down. However if I set the Drop Down Style property to Drop Down List which cannot be edited, the combo box is empty.
I have a dataset and inside it a dataTable. How can I retrieve the data of the datatable?[code]...
View 4 RepliesI need to retrieve data from database to Listbox.
Ex:
Database Fields: IndexID, Name, Value
Sample Values:
IndexID: 145214
[Code]......
When I double click on one of selection, it must retrieve IndexID value.
If any one have method to get data inside listbox with columns
this is my coding when i run this coding for display "Procedure or Function 'sp_developer_display' expects parameter '@developerid', which was not supplied."
this error will display
my sp in sql express is
ALTER PROCEDURE dbo.sp_developer_display
[code].....