[2008] - DataSet/Grid And MSAccess07 Querying?
Aug 9, 2009
Microsoft Access 07
Visual Basic/Studio - 08
Windows XP / Vista
im currently working on a program which must connect to a microsoft access 07 database file and do various operations on the data and then resave the data.Currently i can get the information displayed in a table using a DataGrid and browse through the data by scrolling or using a combo box which i linked to the data.
I am making a query for a quick search function using a text box and a button. I have the sql already however i need some help implementing the variable QSearch into the sql. QSearch is the variable which stores the infomation in the quick search text box. The query is currently in the TableAdapter section of DataSet.xsd ?
SELECT *
FROM Members
WHERE (any row is like QSearch)
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Jan 11, 2012
I have a datagrid which is already bound to a dataset, I need to get this dataset,make changes on some data, then rebind the datagrid with the modified dataset.
here's my code
[Code]...
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Aug 7, 2010
My form has a DateTimePicker and a DataGridView on it. I need to have it query a SQL Server DB and return the table to the DGV. The query is to search the Date_Joined field for date less than the date that the user input with the DTP. With the code below, my DGV is populated with all data and not the filtered data I need. I also have added a Go button for the purpose of execution instead of using the ValueChanged sub for the DTP.
Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
Dim query As String
'dtpDateJoined is a DateTimePicker on the form
[code].....
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Mar 23, 2010
vb
Dim conn As New OleDb.OleDbConnection(ConnStr)
conn.Open()
[code].....
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Oct 2, 2009
I have a DataTable filled with employee names and hours. I want to query that data to make a list of all the unique employees and the total hours for each, but I don't know how to do that. If I were to query the database directly I would do something like this
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Nov 10, 2010
i would like to check the possibilities to draw out data from a data grid, which is currently showing out some data in it.the datagrid contains 2 columns in it,but will display only one column at run time. The result is assumed to get changed according to some parameter values.
So i need to query the value of first column and i need to use it as parameter for a report in report viewer.i am trying it in VB.NET.Kindly let me know whether the above is possible? if so please do let me know how to start.
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Sep 20, 2009
Use the Invoice Class provided to create an array of Invoice Objects. Class Invoice includes four properties- a PartNumber (type integer), a PartDescription (type String), a Quantity of the item being purchased (type Integer), and a Price (type Decimal). Write a Console Application that performs the following queries on the array of Invoice objects and displays the results:
a. Use LINQ to sort the Invoice Objects by PartNumber
b. Use LINQ to sort the Invoice objects by Price
c. Use LINQ to select the PartDescription and Quantity and sort the results by Quantity
d. Use LINQ to select from each Invoice the PartDescrition and the value of the Invoice (i.e. Quantity * Price). Name the calculated column InvoiceTotal. Order the results by InvoiceTotal.
e. Using the results of the LINQ query in Pard d, select the InvoiceTotals in the range of $200 to $500
I am pretty sure I have parts a, b, & c completed correctly. Or at least the provide the desired results. Part d I figured out how to multiply the 2 fields but can't create a new column for the result or figure out how to show the PartDescription with the multiplied result. Part c I think I can figure out when I get part d. I already coded what I think will work for part c.
Below are the 2 Objects the Invoice was given and not to be changed & the LINQ is the one I have been working on.
Module LINQ
Sub Main()
' array of invoices
Dim invoices As Invoice() = { _
New Invoice("83", "Electric Sander", "7", 59.98), _
[Code] .....
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Dec 9, 2009
Am new to VB, can anyone tell me very simple how to share the MAIN Bindingsource with an detail form where i want to edit 1 record from the main datasource?
andreg
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Jun 2, 2010
winforms .net 3.5 Ultrawingrid 9.2 In my subclass of Ultrawingrid.Ultragrid :
[Code]...
This works fine. But when the grid is dropped on a TabControl tabpage, the ctrl-tab looks very different to the sub above. e.keycode is seen as controlkey {17} I realize that by default cntrl-Tab moves between tabpages. I need to override this behavior. My thought is I probably need a subclass of the tabControl which will pass the keycombo through just as the form does but I confess to being clueless as to how to accomplish that. I tried to override the onkeydown of a tabcontrol subclass and just issuing a return and not and base call to onkeydown if the ctrl-tab combo was pressed but it seemed to see the e.keycode as controlkey as well.
[Code]...
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Mar 10, 2010
I have a problem with importing an excel into a data grid.
Here is my code:
Try
Dim _Obj As New ExcelConnection.ExcelConnection
_Obj.ImportAttendence("c:Info_pc.xls", DataGrid1)
Catch ex As Exception
End Try
In the excel i have numers and text and "Service Pack", "Processor Speed" and "Numar procesoare(Number of processors)" and the values for these are numers. in the data grid when i import the excel those values doesn't appear, i receive the value "null".
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Jan 26, 2011
i'm using the MVCContrib grid trying to override the start of a row and the end of a row. It's not working as advertised. This is an extract from my MVC2.0 view.
<div id="chargestable">
<br />
<% With Html.Grid(Model.InvoiceListingInformation)
.Columns(Function(column)
[code]....
The stuff i put in the begin row and end row functions is being rendered above the grid entirely.(PS i can't just use the attributes as i need to wrap the row in another html element)
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Mar 11, 2010
i have a prob that i have a gridview on the parent window. when i open a child window using showmodaldialog, i enter some data in the textboxes. now when i close my child window i want to display the text entered by me in the grid. i want to know how can i access the grid in child window
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Jun 9, 2012
Trying to understand the basics of grid design so how would I make a over sized grid or a grid larger then whats viewable on my screen resolution? Below is a simple chart describeing what i want to make roughly. I would like to build the grid in "blocks".[URL]..
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May 25, 2009
IErrorInfo.GetDescription failed with E_FAIL(0x80004005).I get this error when trying to send a query to a database. Its an access 2000 DB. Google suggests the error indicates that I am using a vb keyword as a field name or table name. I have checked with these here and can't see anything that matches.
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Apr 12, 2010
I'm using VB.net for a project i'm building for a friend. He has access to data on all the schools in our country and also data on the local area Authorities which run these schools. I have a database with two related tables; 'TBLlocalauthority' and 'TBLschools'. Each localauthority can have several schools, but each school can only have one local authority.
[Code]...
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Sep 10, 2010
Is there a particular class in .NET available that will allow a user to query IIS to see what websites are running on the local server? I would like to try to write a simple program that programmitically lets me know which websites are running in IIS along with some basic information about them. Can this be done in VB?
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Jun 15, 2011
Whenever I have
Dim catID as integer
And I use this in a query like this:
cmd.CommandText = "select * from categories where parentid='" + catID + "'"
I get:
Conversion from string select * from categories where p to type Double is not valid.
Why is it so?The parentid datatype in sql is integer.
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Apr 15, 2012
The below code was written to bind the datatable to the grid, but i am unable to fill the grid.I am unable to fill the datagrid. [code]
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Mar 2, 2010
I have UltraGrid and i need when i click on grid row to get content from specific column of that grid. For example if I click in cell of fourth column then i need to get value of first column of the same row where i clicked.
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Jan 14, 2010
This is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
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Jun 11, 2011
Is it possible to re-use a DataTable in .net? Here's an example from code-behind:
[Code]...
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May 28, 2009
I have some sql statement error while querying the DB and to display the result on a data grid view. Could someone check the codes below and let me know the problem with the codes.
Dim cm As New System.Data.OleDb.OleDbCommand
Dim rd As System.Data.OleDb.OleDbDataReader
Dim Conn As OleDbConnection
[code].....
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Dec 24, 2009
I`d like to do a query to a SQL server database using the statements like "SELECT...FROM...." an so on. Then I`d like to save results of the query to an array or other variables. I`d like to handle the data of the query results "manually". I don`t want to use the datagridview and tableadapters and so on which are created when I drag a table from the datasources window to the form. is the ADO.NET and datasets the right tool at all? If yes, I believe these are the first steps needed:
- create a connection string
- create a connection and open it
- create a dataadabter
- create a dataset and populate it with the dataadabter
The first problem is the connection string. When I create a connection to a new data source in datasources window, a string is created and saved to some configuration file. Can I use it and how?
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Mar 15, 2012
Basically for normal select queries from my database I have no problems as I would put the following and then bind it to a controller to display the iteam, however now I am trying to query sum of a field from the database, but I think it should be different as It's giving a Nullable value:
SELECT SUM(PointsRedeemed) AS tAward
FROM [Transaction]
WHERE (BusinessId = ?) AND (CardNo = ?)
[Code]....
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Jan 17, 2011
the remaining code for my vb.net project? In my Project, I have a table name tblBatch that has a field name btchGravel. Since in my project, a field name gravel has more than 10 inputs from the 10 textboxes in my main form. I manage to save it in this manner:
'Save the textboxes in a single string, separated by comma
Dim GravelLine As String
GravelLine = txt1G.Text & "," & txt2G.Text & "," & txt3G.Text _
[code]......
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Nov 25, 2010
I am trying to create a stock scanner which allows users to filter stocks based on multiple criteria that they select. Like the following example with 2 criteria:
Criteria 1 Filtered Result: StockA, StockB, StockC, StockD
Criteria 2 Filtered Result: Stock B, Stock C, StockE, StockF
SCANNER RESULT: Stock B, StockC (ideally this result would be displayed in a GridView)
[code]......
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Mar 2, 2012
Given the following XML file:
<users>
<user name="admin" password="foobar" roles="Admin,Guest" />
<user name="guest" password="foobar" roles="Guest" />
</users>
How do I find a specific node? In this case I want to find the node that has its name attribute to be "admin"
Dim authGroup As XElement = XElement.Parse(myXMLDoc.OuterXml)
Dim foundUser As IEnumerable(Of XElement) = From i In authGroup.Elements Where i.Attributes("name") = "admin" Select i
[Code].....
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Oct 8, 2010
good afternoon people, i got a problem here on my program, i need to query from a different tables in database but it gives me error, here is my code
[Code]...
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Jan 24, 2010
I have been looking into dynamic querying of datasets and the use of copytodatatable() for a project. I have seen in alot of forums that the copytodatatable functionality is unusable as it was removed. have an example of a dynamic Linq query being loaded into a datatable.
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Oct 16, 2010
I'm using this function to return a value from multiple databases across three SQL instances (On the same server). I'm looping though a DataGridView that lists all the databases on one of the three SQL instances.Is there a faster way of doing this? It's quite slow using this method.
Function DatabaseStatus(ByVal SQLServer As String, ByVal Database As String)
Dim myConn As New SqlConnection("Server=" & SQLServer & ";User Id=USER;Password=PASSWORD;Database=" & Database & ";")
Dim Status As String = ""
[code]....
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