why i am unable to display datas from database.
If mConnection Is Nothing Then mConnection = New Odbc.OdbcConnection
' check if the connection is already open
If mConnection.State = ConnectionState.Open Then mConnection.Close()
[Code].....
The main problem is I couldn't display the result when I retrieve data from database.
1. On Picture 1 above, for the Dg_Details, I set the Columns in two type, textbox and checkbox. But, for the datagridview1, I didn't set anything.So, when I bind data from database to Dg_Details and datagridview1, the datagridview1 display the data from database, but the Dg_Details doesn't display the data. Below is the code I written in my form :
Try
objCommand = Me.MyConnection_F.open.CreateCommand
objCommand.CommandText = "select Reg_Num, Reg, Golf, Course_1, Course_2, Course_3, Course_4, Course_5 from Invoice_Reg where Receipt_No = '00001'"[code].....
I think that's happen because the Dg_Details already set and it blocked the result data from database.
I am facing a problem displaying the records of my table on the visual basic form I have created.
This is my code :
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
myconnection = New SqlConnection("server=HOME-PCSQLEXPRESS;uid=sa;pwd=123;database=college")
[Code]....
Note: my database name is "college" , table name is "demo3" . Table contains 2 columns namely name and roll no. How to display the data in those columns on the visual basic form that I have created ?
I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
check the VB behind code for any syntax errors.
Unable to add new rows of data to a database using the DataGrid control.
Compilation Error message is located at [URL] View snap shot images of each line error at [URL]
The VB code behind reads (revision 1.3):
</script>
<body style="font: 10pt verdana">
<form runat="server">
[Code].....
I am using SQLite.When I try to insert data into the tables I get the following:Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.I am using ADO.NET 2.0 Provider for SQLite?
View 1 RepliesI'm sure that I'm missing something really basic here, but I'm just not seeing it. I have the following
Public Sub InsertRow()
Dim employeenumber As String = employeeListBox.SelectedValue
Dim headsetnumber As String = headsetnumberText.Text
[code]....
and when I put a break point on the command.ExecuteNonQuery line, and then step through that, I'm never displayed the thankyouLabel.Text nor is my data being inserted into the database.
I need a simple program which add,edit,save,delete data from database in vb.net. I have tried dataset or sqlcommandbuilder but both are not working. look at my code I have used with sqlcommandbuilder, it is not saving anything in database. provide simplest method to save data in database from dataset or direct from textbox. In this vb.net is not showing any error but not saving
'set up a connection string'
Dim connectionstring As String
connectionstring = "Data Source=|DataDirectory|inventorymanage.sdf;Password='XXX'"
Dim sqlquery As String = "SELECT * FROM ledger"
[Code].....
I created a database in access 2007, linked it to my project in visual studio 2008 (vb). When I enter some data using the UI, it does not save it in the database, and it's gone as soon as I run the program again. I dragged the textboxes from the datasource panel, onto the UI..
this is the code that was automatically generated by vs for the save button:
Private Sub StaffBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles StaffBindingNavigatorSaveItem.Click
Me.Validate()
Me.StaffBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GartisDataSet)
End Sub
I am unable to fill data in the OleDbDataAdapter I get an OleDbException with the following message Syntax error in FROM clause.at this line adapter.Fill(dataset, "User")
Here is the code
Imports System.Data.OleDb
Public Class Form1
Public connection As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:MyDatabase.mdb;Persist Security Info=False")
[code]....
and also I have tried
Dim adapter As New OleDbDataAdapter
adapter.SelectCommand = New OleDbCommand("select * from user;", connection)
Dim dataset As New DataSet
adapter.Fill(dataset)
But I get the same exception Syntax error in FROM clause
i m unable to update data into my database in vb 2008. the changes are reflected in the dataset but they are not reflected in database. i have set the datasource's copy to output property to copy if new but it is still not working.
View 6 RepliesHere is the code for the loading the combobox. I want to load the combobox with the Name of client. so that user can select the Name and then the details which are associated with that ClientName are to be displayed in the desired textboxes.
View 4 RepliesI'm currently attempting to save data inputed into a data grid clicking the "save" button. My problem is, I also have another DB opened in the same window that also needs to be saved. The second database is pulled up by the contents of a text box, so there for it has no real Dataset to call on. It looks something like this.
[Code]...
I try to run the update command it always throws the exception "Cannot find table 0" or "Update unable to find TableMapping['Table'] or DataTable 'Table'." I tried declaring the connection the same way as the code above and then simply calling the da.update(ds) but it wouldn't do anything.
I 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 want to show data from database in datagrid My problem is Ex : i got 100000 records
but I dont want to show all cuz it abit slow, I want to show 1000 records and have button Next
I currently have a SQL Server database with a number of terms along with their definitions and the textbook chapter in additional columns of the database.In my application,I have a listbox which displays the terms; however, I wanted to allow the user to specify a lowerbound and upperbound for the chapters and the application would only display the terms between those two chapters. For example, the user inputs chapter 2 and chapter 5 and the application displays in the listbox all terms that are from chapters 2-5 inclusive.
View 7 RepliesI'm creating a project for my brother's thesis for his VB subject.Now, the thing is, I'm trying to display row data from database to the (already binded) textboxes in form1. As you may know, this procedure requires that the program:
1. Declares an sqldatareader, sqlcommand, and an sqlconnection.
2. open the sqlconnection.
3. ....and use the sqldatareader to fetch the data from the source file.
The database file is made using sql server compact 3.5 and is located on same pc as where I'm making the program.The problem is, I'm getting stumped in trying to connect to the sql server. I'm getting a 26 error "error locating server/instance specified". installing sql server 2008 management studio to allow remote connections (which was already allowed in the 1st place), enabling TCP/named pipes protocol in the config manager, and enabling sql server browser service. I dont have spi firewall on since my isp has its own firewall on and xp fwall is off too. What I'm not sure about is my connection string as it might have been impeding me to connnect to server. How do I form out the correct connect string?
In my sales order i use one combo that is CUSTOMER, actually it display all the data of CUSTOMER database.
at run time in SALES ORDER i saw that the CUSTOMERis not available in that combo then i want to add new customer there which save in my CUSTOMER data base WITH OUT LOSSING WHT EVER I INSERT IN SALES ORDER.
i know how to write a code to display data from the database into a datagridview, and i know how to use text boxs for uplying chnages on the database and directly display them in the datagridview, but what i want is to be able to aply changes without using textbox but directly the datagridview, so the user will be able to see that data on the datagriedview and insert his data in its field and update other and when he saves it will directly effect the database.
View 2 Repliesi try to search and get student name from phone number...but how to display student name to textbox...the database i use is sqlCE 3.5
Private Sub search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles search.Click
Dim connect As SqlCeConnection = New SqlCeConnection("Data Source=Program Filesstudentinformation.sdf")
Dim search As String
search = "select name form student where number =" & TextBox2.Text & ""
Dim command As SqlCeCommand = New SqlCeCommand(search, connect)
[code].....
I want to display a data from database into textbox in vb.net by giving a name. In my database the values are:
Subject: [URL]
Predicate
Title
Object: [URL]
I want to display a object in textbox by giving a predicate value as title
Dim con As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\documents and settings\admin\my documents\visual studio 2010\Projects\WindowsApplication1\WindowsApplication1\db1.mdb")
Dim cmd As New OleDbCommand
Dim dr As OleDbDataReader
Dim da As New OleDbDataAdapter
[Code] .....
i just want to display data's from mysql database to crystalreport and i need codings
View 1 RepliesI have a VB app and it has a login feature installed. Now when someone logs in into the app I want the users First Name and Last Name to be displayed on my second form where the user gets redirected on a sucesfull login. I don't know how to accomplish this as I am quite new to VB. I have provided my login code below (btw it uses an online database):
MySqlConnection = New MySqlConnection
MySqlConnection.ConnectionString = "server=;Port=; user id=; password=; database="
MySqlConnection.Open()
[Code].....
I think the code which provides the first name and last name need to check the users username which was provided on the first form and search through the DB. Then when it has found the record it should recieve the First Name and Last name.
In data base data is stored as
task line_item Amount
task1 lineitem1 amount
task2 lineitem2 amount
[code]......
I am new to vb.net i need to know how to display a database data on listbox
View 1 RepliesI am doing project now.i am a beginner for vb.net. I display data from ms access database to datagridview.Now i want add Button in Datagridview in one coloumn and when i click the button it will display the particular record and i want to display the diagram for that data. I am using filter.but it doesn't work.my code is
[Code]...
I am using a data grid view to display information from a database and I can't get it to update correctly.I can see the data from the database but when I change information and save it it changes the entire column's information. My rows need to have different values in the same column so this is a problem.Here is my code so far, what the program does is makes a list of transactions that are entered.
View 1 RepliesHow to load data from database table and display in datagrid in VB.NET? I know how it is in C#. I am not familiar with vb.net.
View 1 RepliesI have a program in which I want to have the user enter two percentages and display the data matching the criteria on a new form. The query would be:
Select *
From Corrosion
Where corrpct1 >= {column in database} OR
corrpct2 >= {column in database}
The way I currently have it written is to display only one row of data. I need to display any number of rows that meet this criteria. My current code is:
Private Sub btnDetails_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDetails.Click
Dim form As New frmDetails()
Me.Hide()
[code]....
1. How can I do my query to incorporate the user entered criteria (in the where statement)?
2. How can I display ALL of the data instead of just one line?
how to search MS access database using vb.net to display my data from differ i have use this code by it not function. i want to search database using a button and a textbox.. but when i insert a column header of my database into the textbox, it can't show me all data from database.
Protected Sub cmdSearch_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdSearch.Click
Dim InputStr As String = txtsearch .Text
[Code].....
