i am creating app , its a question i am stciked at , i am using vb 2008 by using databinding my combobox has the list ready from one column but as selection change the values from all textboxes and labels should change as per the combbox's selection can anyone help
View 10 RepliesI have a checkbox in my application,when the checkbox is checked then i want to fetch the data from the database and add it to the dropdownlist of the combobox.Again when the checkbox is unchecked then i want to ramove all the data from the dropdownlist of the combobox.
I did this
Private Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
If CheckBox1.Checked = True Then
con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data Source=Etech.mdb")
[CODE]...
When the checkbox is checked then the data is added from the database to the dropdownlist of the combobox but when i uncheck it then the data is not removed from the dropdownlist of the combobox. In the above code i think i need to add an else condition to remove the data from the dropdownlist of the combobox and make it empty when the checkbox is unchecked.......but i cant give the proper else condition in the above code.
This is the code that i did to fetch data from the database and filling it to the combobox dropdown list at the form load event:
[Code]....
I have created a VB form where I select the "API Type" and click "Generate API" buttoThe dropdown "Environment" should show all users in database. in this casefoo, dead, cafef i select cafe, I want the "changepass" table to be queried and display the password for the user cafe.
View 1 RepliesI want to fetch some data from the database to the DataGridView,so i did this
Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Etech.mdb"
Dim myConnection As OleDbConnection = New OleDbConnection
myConnection.ConnectionString = connString
[Code].....
I have a show button that will fetch data from the database:
Private Sub Show_Btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Show_Btn.Click
con = New OleDbConnection("Provider=Microsoft.Jet.Oledb.4.0;Data
[Code]....
Items collection cannot be modified when the DataSource property is set. How to solve this problem?
I have this form: Attachment 73106 In this form,I want to fetch data from the database(access). Initially when the form loads,the balance field remains disabled. But when i select a data from the dropdownlist of the account number then i want the corresponding data of the balance field from the database is shown in the balance filed of the form and the textbox becomes enabled since it is containing the data. I did this at the form load event:
[Code]....
i want to view data(from database) in textbox or combobox itried to use the code as same as datagridview but it doesnt work
View 3 RepliesHow to display data from the database (records) in a vb.net application without a datagrid (i.e in textboxes, and labels) ??
I have used "Add data source and connected my database and also associated the data bindings" but still it doesn't work.
I will attach an image to depict what functionality i'm basically looking for..
[URL]
I want to populate the highlighted controls from a database.
I am developing one desktop application using vb.net 2008 and Microsoft SQL Server 2005. fetching the data from database between a given range.
the date field in my table is of type VARCHAR(25) and the date format stored is dd-mm-yyyy. when I using the between clause in the SQL query then it is not giving all the data every time i.e. the date criteria in where clause is not working fine.
while my clients requirement is to keep the date format as dd-mm-yyyy and fetch the data according to the given range.
I search on the forum and found many queries to fetch the data by converting or type casting the date field within sql query but nothing worked.
The table structure that I am using is as follows
USE [Firm_master]
GO
/****** Object: Table [dbo].[tblTransaction] Script Date: 05/17/2011 21:49:11 ******/
[Code]....
I have this code:
Private Sub EditPage_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load'TODO: This line of code loads data into the 'InventorySysDataSet.tb_master_products' table. You can move, or remove it, as needed.
Me.Tb_master_productsTableAdapter.Fill(Me.InventorySysDataSet.tb_master_products)
sqlCnn = New SqlConnection("Data Source=ZEREYSQLEXPRESS2008;Initial Catalog=InventorySys;Integrated Security=SSPI")
[Code]...
what i want to do is to automatically change the selected option of the cboProductCode on page load depending on the result of a query executed onload also.
I have a DGV I am working on, and I have many columns.
For example I have Columns colcase(Combobox), colreportTime(Time)
the combox shows 4 cases {A,B,C,D}
what I need to do is if the user select "C"
the the colreporttime will show the time of this change unless the old value is C
How do i change the display member of a ComboBox after i have entered a code in a textbox that it represent the combobox value?[code]...
View 2 RepliesI did the following
Imports System.Data
Imports System.data.OleDb
Public Class Form1
Dim con As OleDb[code].....
By this i can fetch only one row(the last row) of the access....how to modify the above code to fetch all the rows starting from the begining from the database..........
whats wrong with my code?if i change the item from the combo box..the textbox not change or has an error?
conn = New MySqlConnection()
conn.ConnectionString = "server=localhost; user id=root; password=12345; database=gigzta; allow zero datetime=no"
strsql = "SELECT accNo FROM accinfo WHERE (completename LIKE '%" & ComboBox2.Text & "%')"[code].....
The title says it all, I'm having some difficulties with the combobox, The items in the list are "Black & Green" - Black will be the Backcolor of a Text box, and Green will be the Forecolor.The App I made is just a Mimic of a CMD, and replicates the output of the command into the Textbox. It's 100% complete, but I'd love it to have the ability to have different colors to choose rather than White and Black.
View 6 RepliesI have this textbox that has been inputted by date in the format of MMM-yy using a datetimepicker.
TEXTBOX Jan-11
Now I need to get the exact date on the textbox to be inserted in a string.
string1 = Cdate(txtbox1.text.trim)
but in this code, the inputted text on the textbox can only be converted into MM-dd format
string = Cdate(txtbox1.text.trim) = 01-11-2012
I populate a hash table with the name of a control as the key and the control itself as the value using the following code that loops through my code on start-up:
Private Sub Populate_Hash_Table()
For Each ctrl As Control In Me.Controls
For Each member As Control In ctrl.Controls
[Code]....
This method works effectively, but the only problem is I seem to get a preformance hit as it takes a second to set the current control to false and the new one's visibility to true. What way should I modify my code so that it works more efficiently?
how to pull/fetch data from SQL DB using Data Reader and loding to XML file.
After that I will have write code to read XML file and download to CSV file and Test files.
I have two comboboxes. The data sorce of combobox1 is a list of string that is fixed.Combobox2's data sorce will be a list of string that depends on the selection of combobox1. This is very similar to a common case as follows: first enter your contry, then depending on your enter, the second combobox will show you the list of universities in the country.
'Change selection of first combobox
Private Sub cbxClient_SelectedIndexChanged(sender As Object, e As EventArgs) Handles cbxClient.SelectedIndexChanged
[code]....
i have one website which have only html pages.I want to add one page that fetch records from sql database is it possible??what should i do for this task??
View 3 RepliesI am able to loop through all the customers in db but unable to fetch the address of customer to disply to the using using vb .net?
View 2 RepliesHow to fetch data from SAP r3 to Oracle with .net?
View 1 RepliesI have a form with multiple combo boxes and text boxes making an invoice.. I have the combo boxes linked to my database and I want each selection to fill a different textbox. The comboboxes fill on form load... How can I fill the textbox with the selected index from the combobox?
View 19 RepliesI got the System.Data.DataRowView when I tried to select the data from sql database. These are my code:
......
myCommand = New SqlCommand("SELECT FirstName +' '+ LastName FROM tblVisitor", myConnection)
myAdapter = New SqlDataAdapter(myCommand)
[Code].....
I have a gridview where each columns have two template fields. One is ItemTemplate and another is EditItemTemplate. Now in EditItemTemplate it will show some textboxes where i can perform necessary editing. I can easily fetch data from each cell by using the following code-
[code]...
But how can i fetch data when the grid view is not in editing mode that is in ItemTemplate. I have tried the following-
[code]...
But its getting the exception object reference is not set to an instance of object. This is probably happening because the above code should be used in a method like RowDataBound when a row is instantiated. But I have to fetch data from some other method.Again for clarification I want to fetch data when the gridview columns are in ItemTemplate Mode.
i want to use linq to fetch data from datatable.I have 2 tables in Cache and i want to join these tables then get value from resultset.I pasted Original Sql query and my linq query here.My linq query returns nothing.Where do i miss?My original sql query returns 1 row,but q1 is nothing
[Code].....
I am trying to get a value for a textbox from a database according to the selected item in combobox. but i had this ex.message " there is no row at position (0) "i have filled the combobox droplist from the same database table as below!
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim connstrg As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=C:Documents and SettingshedrisMy DocumentsREGISTER.mdb;"
Dim conn As New OleDbConnection(connstrg)
[code]....
In my form, I have TextBox/ComboBox to add data into MS Access. There is a Seacrh Option too, When I search it, the results are shown on a DataGrid on same form. When I click on a particular ROW on the DataGrid, the info of that row are displayed on the TextBox/ComboBox that I have, I m using this code for that :
Dim i As Integer
i = DataGridView1.CurrentRow.Index
cboPoll.Text = DataGridView1.Item(1, i).Value
txtHn.Text = DataGridView1.Item(2, i).Value
[Code]...
I am a newbie in VB.net(programming). I need your advice regarding Gridview control.
I have a gridview loaded with two columns-one column(Name)is with some Text,another(Price) is empty.
I have got a TextBox with the data of Name and Price.
Now,I would like to loop through the Textbox,and see if the Data/symbols of the Column(Name) of GridView Control matches with the Data in Textbox.
If the Names of the GridVies First Columns data matches with the names of the Textbox,then the Price data should be fetched in the Second Column(Price) of GridView.[code]...