VS 2008 Referencing Child Table Column In DataGridView?
Dec 28, 2010
I cant grasp it right now, lol. So here's what Im trying to do: I have two tables, a main table, and an employee table, with a foreign key in the main table pointing to the employee number in the employee table. Im trying to use a databound datagrid to show everything from the main table, and the corresponding name of the employee number referenced in the main table. Is there a way I can do that using DataSet.Table.Column.Expression, or what would be a simple way of doing this? I cant use TableAdapter b/c sometimes the database is offline, so preferably with datasets.
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Jun 18, 2009
in DataSet ds I have "tbl1" as parent table and "tbl2" as childtablehow to show both table in datagridview if column id in "tbl1" related to column headerId in "tbl2" ?
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Nov 23, 2010
Basically the code below is supposed to load data from a reader into a datatable, then compare a date to the start date and end date in each row of the table.However, I am getting errors on the if statement indicating Overload resolution failed because no accessible '>=' can be called with these arguments.I can probably do this with just the reader but I am playing around with a data table because I know I will have to learn how to cycle through the records and look at them at some point and this is a simple example I can use to do this.[code]
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Dec 14, 2011
I have:
- Table1 with columns: PK_ID1, LOCATION, DIRECTOR, SELLER, SELLERID, WORKTIME (relationship), WORKCODE
- Table2 with columns: PK_ID2, WORKCODE (relationship) & WORK_DESCRIPTION
My DataGridView do a SELECT * FROM Table1;How can I replace WORKCODE with WORK_DESCRIPTION in DataGridView, please?
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Jul 9, 2010
I have a table (Projects) which is linked to projectVersions on projectID..projectVersions contains several columns on which I'd like to filter a returned project (and associated projectVersions) list. For example there is a "capacity" column and a "country" column. I am doing a filtered list of projects on one page and I'd like to include all projects where any one of the associated projectVersions has a capacity of 750ml and a country of "France" for example.It may be that a particular parameter is not set and so I pass a zero to indicate not to filter on that.I guess this needs some kind of subquery as when I try and do something like this: [code] it doesn't work as the "xxx" bit, being one-to-many, expects me to specify an item to get at the entities within and yet I want to query where ANY of the associated versions match one of the criteria.
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Mar 5, 2009
I have a datagridview that the columns are bound to a SQL table. I want the collection of a combobox in the datagridview to contain a list from a SQL table.
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Feb 5, 2012
I have a data table, i want to add a new column on that table, the data in that new column will depend in the data from another column. Now i can think of two ways to accomplish this, first is loop through the whole table and do the statements to get my new columns appropriate data. the second approach would be to give the new column an expression, then convert the table to xml (to remove the expression) then convert the xml string back to datatable.
Now, is there any other way around this? what could be the most optimized way in solving this task?
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May 21, 2012
Dim obj_DataTable As New System.Data.DataTable("Category")
Dim obj_DataSet As New DataSet()
'Declaring the array of DataColum to hold the Primary Key Columns
[code].....
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Jan 11, 2011
I have a situation where a database table is updated with records inside a loop. Every record in this table has a parent child relationship with another table. This child table is also updated subsequently inside the same loop.I am creating the datatable for Parent table and adding records inside the loop, but committing the records in the database (using SqlCommandBuilder) outside the loop only once.
Inside the loop I am also calling the function for updating records in the child table. Because the adaptor and datable objects are created inside the child table function, I need to commit records in child table inside the function only. So this happens before commit of parent table. Because there is a PK-FK constraint in the database, an error is generated.
Simplest solution would be to bring all code inside one function. But I don't want to do that. Besides this parent child relations can go upto any levels.
[Code]...
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Dec 21, 2011
I have a data table whose one column is related to a column of another table. I have a listbox in a form which shows a column (which is sorted by another column value by ORDER clause) of the parent table and other columns are in textboxes. The child table is represented by a datagrid. When I add a new item in parent table and click save, the newly created item is listed at the bottom of the listbox violating my ORDER clause. When I wrote some codes to fill data again after updating, it shows an error message[code]...
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Feb 15, 2012
I have a question about assigning variables values based on values stored inside an sql database. I have the connection part down, but here is my basic set-up. I have a table with the values {username, password, isAdmin}, where username and password are strings and "isAdmin" is a bit variable. I am able to read in the username and password entered by the user and match it to the database fine, however I would like to also read in the "isAdmin" and set it to a local Boolean variable that will then direct the user to the proper form.
[Code]...
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Jul 16, 2011
I have a database with a table that is a child to many other tables. I am using this child table as a datasource for a datagridview. I am using comboboxes to display specific fields in any parent tables, instead of the user seeing the foreign key. Everything is fine. However, I would like to filter the BindingSource based on text matches between any of the fields in the child table and the corresponding fields of the parent tables.
[Code]...
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Sep 16, 2010
In my DataGridView table i have one column called "Category".In this "Category" column values are like
3101,
3102,
3103,
[code].....
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Jul 28, 2009
Using VS-2008, VB and SQL 2005 Developer:
I'm using Queries within the TableAdapter to grab certain data record field validations, most of them are using the Scalar Query to see if a certain condition returns a record or not.
I have one check I need to do that SUMs three fields and have tried it with both a Scalar and Regular Select, both return the results fine, my problem is creating the right syntax in the VB code to check the returned values.
Here's the Query Code in the Adapter (called GetInvoiceSum) and I pass it the cJobNum
SELECT sum(taxable) as taxable, sum(material+labor) AS subtotal, sum(tax) AS tax from ticket where jobnum = @cJobnum Here is the Code in the VB app - it gives me errors on the declaration and I've tried various types DataRow, DataSet, etc....not sure what I'm missing here and am very new at this....
Dim nSumTicket As DataSet = Me.TicketTableAdapter.GetInvoiceSum(cJobnum)
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Feb 7, 2010
I am having trouble adding a row to a databound datagridview on a parent form from a child form. I have two forms, one contains a datagridview that is bound to a table using 'datagridviewbindingsource' and contains an 'add' button. The second contains a checked listbox that is populated correctly and has a "Cancel" and an 'OK' button - when i check several items in the child form, i would like to hit okay and update the bindingsource of the datagridview on the first form with the checked items.
Code:
in form1 when btnAdd is clicked
dim f2 as new form2
'call it as a dialog to check for the cancel button
f2.ShowDialog()
[Code] .....
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Aug 23, 2010
I have two tables Employees and CafeLogs. Some employees can be cashiers and also customers at the Cafe shop.
Table structures:
Employees: EmployeeId(PK) , FirstName, LastName
CafeLogs: LogId (PK), CashierId, EmployeeId, Value, => CashierId and EmployeeId are the data from column EmployeeId of Empoyee table
Table relationship:
Employees 1:N CafeLogs (CashierId (FK))
[code]....
Right now I know how to select only LogId, Employee's name, and , Value, not with Cashier name yet.
Dim query = From log In db.CafeLogs _
Join emp In db.Employees On emp.EmployeeId Equals log.EmployeeId _
Select log.LogId, emp.FirsName, emp.LastName, log.Value
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Apr 10, 2011
I got some simple sql statement to see a record but I get an error - column does not belong to table...Here's my
Dim mydataset As New DataSet
mystring = "select max(NoteRef) as max_NoteRef from notes"
Dim adapter As New SqlDataAdapter(mystring, nwindconn)
[code].....
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May 3, 2010
how to connect my table like america and child table like State i want to add sub node or childto th tree view?
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Jun 17, 2009
I have a SQL Data Base. I have created a relation between these tables. Problem is when i drag and drop it on Data grid i get only Parent table columns but i want to sea them both like this.
- Parent Table Row
- Child Row 1
- Child Row 2
[code].....
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Feb 19, 2009
I have th is little programm:
Dim dbOud As ADODB.Connection
Dim rsOud As ADODB.Recordset
Dim strCnnOud As String
[code]....
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Jul 30, 2011
This is my first time really working with DataGridViews. And for my own learning, I am trying to create a "System Information" program. I understand you can easily do simple stuff such as:
DataGridView1.Rows.Item(0).Cells(0).Value = "OS Name"
DataGridView1.Rows.Item(0).Cells(1).Value = My.Computer.Info.OSFullName
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Sep 6, 2009
I need to fill an array with whole column from database table, so i have used reader to read the values from that column, but can not figure out how to put them into array (code below doesn't work) [Code]
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Feb 24, 2011
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]....
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Jun 16, 2009
I have recently built an N-Tier app using VB.Net 2008. The application is based on Beth Massi's tutorial at [URL] I am trying to incorporate a datagrridview control on a Parent form - one parent (father and mother) to many children. For example,
[Code]...
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Mar 15, 2012
I am using 3 unbound DataGridView controls to display certain information. To load the information into those DGVs, I am pulling the information from an encrypted file, decrypting it, parsing the information, then trying to fill the DGVs with that information. The loading from the file is called by the menu item click. Here is what I have so far:
Private Sub miCLoad_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles miCLoad.Click
Dim FilePath As String = "C:FListCList.clt"
[code].....
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Oct 6, 2010
This is bugging me. I have a "main" form named frmMain with a DataGridView object named objDataGrid.When a user double clicks on a row or clicks another button, I hide the main form, open a new form and want to reference the values in the row selected by the user but I keep getting an error when I try to access some, but not all, of the datagridview's properties.
[Code]...
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Apr 9, 2010
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
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Apr 12, 2009
I am using VB.Net 2008 and have build a windows form with a datagridview that displays a query of records for the current client. One of the columns is for Fee. I need to total that column and place the result in a Label or Textbox. I am using the Query builder to pull the records and so I can not get away with the SQL expression in the query returns the Schema does not match error. I have tried to code it pulling the information directly into the form from the Datagridview and could not make that work either.
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Aug 11, 2010
Right now when I need to refer to a cell to update the text I do it this way:
DG1.Rows(intRow).Cells(1).Value = "Hello!"
Is there a way to use the column name for column #1 rather than the number? This way if I decide to add columns later in an update and it's not at the end of the current columns, I do not have to re-number all my code. I tried searching but must not be looking for the right keywords.
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Nov 23, 2011
have bound a column of datagridview to a sql datatable..Now when i m selecting an item from combobox , another coulmn of that datagridview should show field value from another sql datatble
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