I am facing a problem displaying the result of my "select *" query on the form . Here is my code:
[code]...
But when I write this code and run my form I am not able to see any records present in my database tables being displayed on my form. I have inserted a DataGridView on my form . What changes should I do to my code ?
I have this frm_customers and this button called View/Edit.
What I want is that when i click this button it should ask me a customer Id and then go to that customer id in frm_customer
I've created a form which correctly displays all my fields in a recordset. I can scroll through them, add new records, delete records, etc. etc. and everything is fine. I now want to add a Search field to the form so that when the user enters a search string, it automatically searches through the dataset and refreshes the display to display the appropriate search result (i.e. populates the currently open form with the appropriate record).I have a simple database, and I have created a form (not a datagrid) for displaying the records (and to make it easy to add new records and browse through with the next and precious record buttons). BUT, to put a simple textbox on the toolstrip and enable the user to write something in it and then click a button to display the entire record containing that "something" seems imposible.
I have eleven columns in my table, and I want to search the one with the Primary Key, so there will be no confusing wich record to display.
I didn't get the result I want from the following code:
Private Sub tblView_SelectionChanged(ByVal sender As System.oject, ByVal e as System.EventArgs)Handles tblView.SelectionChanged
Dim st As String = tblView.SelectedRows.ToString
[Code]....
I wanted the data I selected on the datagridview row to be display in the textbox, but it displays the error message that st(0) produces "S" which is incompatible to my RackID data type.
how to take a query that returns a single row of data and load that data into textbox controls.I know about ExecuteScalar but it is only good for a single column of data from the query.
View 2 RepliesIt's simple question. I am confused since I am new to vb.net and windows form. I would like to display combining of one column (lastname+firstname) in the list box control from the query. My code display something.
[Code]...
I 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?
I have a project in Visual Studio 2008 and there is a working data connection to a MySQL database. In other words, I can query the db directly from Visual Studio and it will display the results.
I've tried a couple of approaches that I found online for writing a connection string and accessing the db, but no luck yet.
All I'm trying to do is code a button to query the db and then reset the text property of a label/textbox to display the results based upon another label/textbox value.
The pseudo-code I am imagining is something like this:
Private Sub query_submit_button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles query_submit_button.Click
result_textbox.Text = SELECT field FROM table WHERE otherfield = key_textbox.Text
End Sub
I didn't see any related questions posted on SO - forgive me if I missed one that already exists and this is a dupe.
What is the correct way to accomplish this?
EDIT
Using MySQL 5.1
I have the following code in my project:
rivate Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String
[code].....
I want to bind the following query result to datatable:
Dim query = From c in db.Customers _
Where c.Status = "Active" _
Select c.CId, c.FirstName, c.LastName, c.Email
First time poster and new to ASP programming.I have a functional database to where i am trying to add new functionality.I'm trying to add the idea to check if a returned string is empty, if so get value from a backup table which holds historical information. Here is what i have got for the specific part:
[Code]...
I'm trying to run a query and display the result in a listbox. I can do it for a datagridview but not for a listbox .
Code:
Private Sub frmNieuweActie_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
strSql = "SELECT Acties.Actieid, Acties.Actie " & _
"FROM(Acties) " & _
[code]....
I get the correct amount of items in my listbox but it displays "System.Data.DataRowView" as item .
I'm trying to fill combobox with my SQL query result.[code]...
View 2 RepliesI am trying to fill a combobox using the results form a query to combine two fields (first and Last name). I cannot seam to get to the query through the table adapter. I can set the binding source and select one of the fields to fill the control but I cannot get to the query's.
View 2 RepliesI have a sql query which is returning null value below is the section the iID is null.Once debugger reaches this it goes to exception as its result is NULL. How to control debugger from going to the exception.
[Code]...
How do I assign the query result to a variable.I am using SQLlite. Below is the code for retrieving password from the User Table. I need to compare the given password and the given password.
Dim i As String
Dim p As String
i = txtUserID.Text
[code].....
I would like to parse the result of entering a query at [URL] the problem is that I cant seem to the post data just right and cant properly open a webrequest to the site.
View 3 RepliesI have added a query to my form using the sqlDataAdapter object and the wizard.Now I want to show the result of the query in a combox on my form.The combobox is not binded to a data source, but is going to be used for searching a record (but this is for later)
View 10 RepliesI am new in vb.net 2008.I want to populate items of a combobox with a result of a query that may include join or not.
View 3 RepliesI'm trying to show some concatenated data in a CheckedListBox so that users are able to select the data for use later on. Here is the code I am using currently:
Dim con As New MySqlConnection
Dim theQuery As New MySqlCommand
Dim theTables As New DataTable
[Code].....
Is there a way to show the value retrieved by an SQL statement in a message box? In context, my SQL statement searches my database to find a customer record that matches the details entered into the text boxes on the form, and retrieves the CustomerID. Is there a way to show this CustomerID in a message box?
The SQL code is:
SELECT customerid
from customer
where cust_forename = @custforename and cust_surname = @custsurname and cust_house = @custhouse etc
I have a stored procedure:
CREATE PROCEDURE [TestProc]
AS
BEGIN
select '1a', '1b'
select '2a', '2b', '2c'
select '3a', '3b'
END
If I execute the following query using SQL Management Studio,
[Code]...
How can I get the three result sets using SqlDataReader? Or even three SqlDataReader's? Or is it possible to get multiple result sets in just one query in VB.NET? Is DataSet my only option?
I have two text box(Start Value and End Value), one datagridview and a search button SQL script= Select id, ContactName from Customers where id between 1 and 5 I want a scenario where when I enter the start value 1 and end value 5 and click the search button it will run the above query and display the result in the datagrid view.
View 4 RepliesI'm looking to store the result of SQL count function in a variable, i've tried numerous ways but haven't managed to get it to work?
View 3 RepliesI'm just wondering if it's possibe to get the results from a query and then assign the results to a variable. So I will run a query which will return the names of the tables stored in the database, then I want them to be stored in a variable. So it would be something along the lines of:
Dim strFrom AS String = "FROM "
strQuery = "SELECT * FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'Database1'"
con.Open()
[Code]....
I have the following code which returns a single row and column of an MS Access database. My goal is to put it into the Text property of a textbox. Can please someone explain me how to do it?
Dim cmd1 As New OleDbCommand("SELECT NOME From FORN_NIB Where NUMERO = ?", cn)
Dim P2 As New OleDbParameter
cmd1.Parameters.AddWithValue("P2", ComboBox1.Text)
Dim Reader1 As OleDbDataReader = cmd1.ExecuteReader()
Dim dt1 As New DataTable
dt1.Load(Reader1)
I have a for xml raw select query that returns a xml string in server2005 and i would like to write that string to a file using vb.net.
View 2 RepliesHere is the original xml file
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<setup>
<cap>33</cap>
</setup>
[Code]...
I have this code in vb6 the result of this query is bond in flexgrid how can i do this in vb .net using data grid.
Dim SQL As String
Dim rs As ADODB.Recordset
'SQL = "SELECT PO_Header.OrderID, PO_Header.RefNo AS [PO Num], PO_Header.OrderDate AS [Order Date],Category.Description + ' ' + SubCategory.Description as Department, " & _
[CODE]...
I would like to post the result of a query in a textbox. [Code] Suppose this is my table, then I would like to post the sum from aantal from in a textbox. For UserID 1 it would be 35, for UserID it would be 35, [Code] but how do I get the result in my textbox?
View 2 Replies
