I am retrieving the Max Value of a column using the Table.Compute Method
Max Value
dtlist.Rows(i)("Value") = dtsold.Compute("Max(ClosePrice)", "Distance <= " & Dt & " And BuildingSize<= " & GLA & "")
I would like to also return another value of that same record
How do I identify the record that is the Max Value?
I am leaning VB and have created a basic inventory app for work that consist of 4 tables, CurrentInventory, Surplus, Staff and Category. Each of these tables have a corresponding form. My question is with the CurrentInventory and Surplus form/tables. I want a button on the CurrentInventory Form that when clicked the current record would be transferred to the Surplus table and deleted from the CurrentInventory table.I am assuming that I could somehow use the INSERT command to copy the current record to the surplus table but I am not sure how to accomplish this.
View 5 Replieshere is my current line of
Me.highlistpricetxt.Text = CStr(dtlist.Compute("Max([" & Form10.lp_txt.Text & "])", ""))
I thought this was the way to format the result but obviously not
Me.highlistpricetxt.Text = Format(CStr(dtlist.Compute("Max([" & Form10.lp_txt.Text & "])", "")), "#,###")
On another note I am not even sure why this is working since my column value is in string format, i thought it would need to be in some form of integer value to compute?
I want to be able to get the one record I return from a table and put the results into text box's directly rather than put the result into a combo box and then transfer the text across.
Private Sub GetStationStats()
conn.ConnectionString = myConnString
Dim myCommandStationStats As New MySqlCommand
Dim myAdapterStationStats As New MySqlDataAdapter
Dim myDataStationStats As New DataTable
Dim SQLStationStats As String
[Code] .....
The fields Signon and SignOff, plus many others which I didn't include in this sub. Above code does work, its how to get it into a text box.....
how can i insert record in specific column name..i've used this code it works but how can i insert my record in a specific column name?? here is my code in my btnAddRecord :
If frUpdate = False Then
IsConnected("Insert into products values(" & _
Me.TextBox1.Text & ",'" & _
Me.TextBox2.Text & "','" & _
[code]....
I have two tables Products and Categories with a many to many relationship. I am trying to copy the categories linked to one product (OriginalProduct) to another product (newProduct). The problem is when I execute the SaveChanges() method, I not only get the records in my linking table, but it also creates another copy of the categories in the categories table. I've tried this in many ways but here are the last couple that I've attempted:
' Copy Product/Categories
For Each oneProdCategory In OriginalProduct.Categories
Dim relatedCategory = _productContext.GetObjectByKey(New EntityKey ("ProductInfoEntities.Categories", "RecordId", oneProdCategory.RecordId))
[code]....
My database : table1
ID FIRSTNAME AGE
1 Sumit 22
2 Sanjeev 23
i have gridview 1 and textbox1 and button1 i want when pages load the gridview displays the all records from table1 and also ...i i wanna search record for firstname by typing sumit in textbox1 and click on button1 then in gridview the record of sumit will be shown ..by default gridview display alll records from table1 How to do this My Selct Query is below : but it doesnot display all record ...but it can display record if you search for a particular record .
[Code]...
I use This Code To Save Data in Table First I delete record Then Insert record
View 4 RepliesI want to update a date field in my table when a record is updated to reflect when the last update was made. I have this for the parameter: objEXTCommand.Parameters.AddWithValue("@entryDate", Now.Date)
However, this inserts the Date and a time of "12:00:00". I want the date and current system time. I've gone about several ways, but none seem to work. I try this: [Code]
delete a record in a database table in crystal report, after the report had been view from the new page and when the page is close.
the report is done in vs2008 c#.
I'm receiving the following error:"You cannot add or change a record because a related record is required in table 'FORN_NIB'."
I cannot understand this error fr the related record really existe on the FORN_NIB table. It is even picked up from there. Here's the code where the error occurs at the .Update instruction:
HTML With rst
.Open("DADOS_RECIBOS", conn, ADODB.CursorTypeEnum.adOpenDynamic, ADODB.LockTypeEnum.adLockOptimistic)
.AddNew()
.Fields("NUM_FORN").Value = Me.TextBox1.Text
[Code]...
I would like to know how to filter out system tables and only return user tables .when i run the code it displays lists of system tables with user tables list in combobox.I have just gotten into vb.net and have tried few ways to do this but dont understand well enough.
[Code]....
I got an error when I tried to save a deleted record in a table which I use to store username and password.
I can delete with no problems but the error message popped up when I clicked on the update icon
My login code is like this
Imports System.Data.SqlClient
Public Class Form1
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As
[Code]....
Is there a way to use the DataTable.Compute Method with 2 or more filters, i have googled a bit and cant seem to come up with answer?
Current code
Dim Dt As Decimal = NumericUpDown1.Value
dtlist.Rows(i)("Value") = dtsold.Compute("Max(ClosePrice)", "Distance <=" & Dt & "")
[code].....
visual basic 2008 express
access 2007 db
I am attempting to fill a form with multiple rows from an access table based off of a parameterized query. My query works fine but I don't want to return one row at a time, I want to return all rows that match my query in multiple text boxes. I know that I can use a datagrid view to accomplish this, but I would prefer the look of a textboxes on a form. I have read through many books and searched the internet forums but think I may just not know what to search for as nothing has worked yet. Can anyone point me in the right direction. So far I have tried setting the text box value to the row().item(), creating a different dataset for each row, and even setting variables for the results of the query to then be passed to the text boxes. Since none of this work, I don't really have any starting code to post. If I could just get a starting point I could work from there, so don't feel the need to code anything for me, just set me in the right direction.
I've written some code to try some thing. I don't get an error message. However, the record count return " zero". I declare some objects and make a connection. That all works fine. But no records.
Here's the code :
Public Class Form1
Dim vtest As VariantType
Dim cn As ADODB.Connection
Dim rs As ADODB.Recordset
Dim cmd As ADODB.Command
[Code] .....
How can i compute the total value of a row in datagridview in vb 2008[code]...
View 4 RepliesI'm very new to linq and I'm trying to come up with a linq query against a dataset that will return a max count value based on grouping records.[code]...
View 1 RepliesIt's been a good few years since I dabbled in VB and I'm very very rusty so any help would be great! What I'm looking to do is search an access database with user input and display the relevant record.I have a single table set up in an access database called school_info with the following fields and data:
Tres________DfE________Name_________Type
001________1234________School 1________Primary
002________4321________School 2________Secondary
[code]...
I've linked the database to my new project, connected the database and added the 4 fields to my form. When I run it, the data shows in the boxes fine.The Tres and DfE fields are show in text boxes on the VB form, and the school and Type are show in labels. What I really want to do is be able to manually type in either a Tres or DfE number into the relevant text field and have the other labels auto populate with the relevant data that's stored in the database table.
i have a dataset that i am viewing in detail view i can enter a new record and save it fine but the auto ID field enters as (-1) after i save it does not automatically change the (-1) to a number so i need to clear the dataset then refill it to give it a genuine number to prevent concurrency violations. my problem is after i refill the dataset it returns to the first record in the dataset not the last entered record, how do i get it to return to the last record.
View 4 RepliesI would like to get message, or true result when DataSet get new record (new row). But, I always get message as "no". [code] Button3 should return "Yes" as new record has been added, but does not? [code]
View 2 RepliesI have sucessfully written in excel VBA. The idea is to used the textbox1_change event to find a match in column A of table and once it finds the record, return the value of column B as label1.text. [code] In VB 2008 it's a lot different. I have set up the form the same way with the textbox and labels. I have made a dataset with (1) table (Table1) with (2) columns. Lets call them column A and Column B.I have added the dataset as a binding source to the form and also a table adapter. I also have a standardized query made for the dataset with a very simple SQL statement "SELECT Column A, Column B from Table1"..In order to get the user input to start searching Column A I assume under the textbox_change event i would put something like: [code] I'm getting a bunch of errors of course. Would somepne be able to give me some direction?
View 3 Repliesi have some sample code on inserting a record from one table to another new table? Making the record on the first table to be deleted and been transfered to another table ..
View 7 Repliesi don't now where to but my question so if this is the wroung section i am sorry
i am designing a web site with a database using visual studio
and the code i use is visual basic
i use this code to insert in to tabel temp1
MySqlCommand.CommandType = CommandType.Text
MySqlCommand.CommandText =
"Insert into temp1 values(@id_card,@city,@name)"
[Code].....
am having a query regarding updating a table A records from table b on a button click...have created connection sting and commandtext to exexute d query am tryn ds query bt it seems to throw some syntax error
cmd.CommandText =
"UPDATE stockno_table SET(product_id,Sold,Rec_No)
=(SELECT product_id,Sold,Rec_No from stockno_temp_copy
where stockno_temp_copy.stock_no=stockno_table.stock_no) where(exists)(stockno_table.stock_no=stockno_temp_copy.stock_no)"
basically the fields are same bt the stockno_temp_copy is a temporary table which i want to empty always while it updates all the table records to stockno_table...all the records except the Sold which is YES/NO field changes...NB: Access DB is used?
I'm trying to return the SCOPE Identity of the inserted record in my stored procedure @temp_id, but how can I bind it to a label e.g
<asp:ControlParameter ControlID="ASPxLabel_RequestTemp" Name="temp" PropertyName="Text" Type="Int32" />
I'm doing a simple linq request like this:
Dim r = (From p In db.Product _
Where p.Product_ID = ProductID _
Select p)[code].....
My problem is eventhought the request return an empty table (I tried with a count too) it consider the table as not empty and execute the code inside the "if"...
I want to return the top 5 records of a table in a dataset for datagrid view. The following does not work.
DataGridView.DataSource = DS.Tables("TABLENAME").Select("SELECT TOP 5")
There are two combo boxes taking user's inputs to return a record in an Access Database satisfying the requirements. This procedure is controlled by a button. However, when it reads "da.Fill(dt, "NETP_ParaList")". It reports error saying that "ArgumentException was unhandled; Object is not an ADODB.RecordSet or an ADODB.Record. Parameter name: adodb" I have no idea what this talking about.
[Code]...
I am new to development and I'm using VB.NET to build an application for my kids. I want to teach them how to manage their money so I've decided to build them an application. I have a database table which stores all transactions aswell as the userid (users have to login). When one of my kids opens his bank account, I have got it so that it only shows his transactions with date and bank account balance and no-one elses. My question is, how can I retrieve the latest balance and display it in a label at the top of the form?
View 3 Replies