I'm trying to create a Windows Form application which will prompt for data to then update a SQL table.
The SQL table requires 3 fields, column A, column B, column C.
To make it easier for the end user, I'm trying to allow them to input all the data in for column C first (As they won't know the relevant data for Columns A and B until the end of the process when they request that data from a third party).
Is there a way to store all the data they add for column C, then at the end request a single piece of information for A and B, which will then populate the other two columns and update the SQL table with these rows?
Thanks
Sounds like you could use a datagridview with ADO.net. Make the datagrid 3 columns wide, and utilize the first column (does it make more sense to fill out the first column rather than third? You can update it back to the database in any order.)to expect the value that you want to capture (you can add more datagrid rows as needed). In order to do this query to the database, you can add a database through dataset designer and create a method to pull/update data to/from sql server.
To get data out of the DB, you could loop through each row of the datagridview, collect the column1 item, pass it as a parameter (if needed) to your new method, receive the data back from the database, fill the the other two columns in the row.
Now that you have that data you could do an entire update into the database using another method created in the dataset designer.
Related
I've tried to find a solution to this, but can't seem to find anything that quite matches my goal here. The answers I've found are either C# or are wanting the data to go from the DGV to the DT.
I have a datatable, which is built out using an SQL query. In this data table, I have a column "Lab ID" that I want to use as a search index. On my front end, there is a requirement for the Lab ID to be supplied. When the Lab ID is entered, the data table should be searched, and the resulting row (entire row) should be added to the datagridview. Each scan should add a row and not overwrite. I have specified the DGV columns at form load but would like it to grab the column names from the table if possible.
Here is my current front end - noting that the left datagridview is only temporary to confirm the data is coming out of SQL and references the same datatable I am wanting to use for the right DGV. The user will pick the dates, enter the Lab ID, then click Check. If the Lab ID checks out, it should be added.
The other thing I'll need to able to do is compare the results in the data table with what is in that datagridview - if an item in the table is missing in the datagridview, I need to be able to retrieve the missing Lab IDs (don't need the whole row for this one) and add those missing Lab IDs to a messagebox.
I don't have any code at this point because I've not found anything that works, with the exception of this:
dgScanned.Rows.Add(GetResults.Rows)
Which results in the string 'System.Data.DataRowCollection' being added to the 'Request ID' column.
I have 2 sheets in my Excel project:
In "Sheet1", I have a big data table, with 4 columns:
DataTable[Country], DataTable[Brand], DataTable[Parameter], DataTable[Calculated].
On "Sheet 2" I have a dashboard. I have there a table called FilteredTable that presents the data from DataTable. I have there a drop down command that lets the user select country, and the table is filtered accordingly.
I want that the FilteredTable will not only show data from the original DataTable, but to let the user to change the [Parameter] column. When changing it, I want that the [Calculated] column in both tables will be updated accordingly. If the user will change the country, then the FilteredTable will show the parameter that is stored in DataTable for that combination of [Country] and [Brand]. And if the user will get back to the first country, the displayed parameter will be the last one that the user entered.
I am a bit confused how to do it.
What I have done so far is:
1) to read into FilteredTable rows from DataFilter, using a formula array. I am mirroing this way [country],[brand] and [calculated]
2) in the DataTable[paramter], I read from FilteredTable[parameter] the same way, with a formula array.
It works fine, untill I change a country, and then the parameters in FilteredTable are already do not match the new country, and in DataTable, the parameters for the old country where changed to 0.
I'm in a logical loop. Is there a way out?
Thanks
Have you considered using 3 tables instead of 2? This would be: the original data table, a table which pulls in all values created through manual entry from the display table, and the display table itself.
In VBA, create a function which runs each time a formula is changed in the display table. That function should take the new data from the user, and copy the altered row onto the 'manual entry' table. For the display table itself, you could either recalculate manually through VBA every time a change is made, or have a formula which looks to see whether there is data in the manual table. If there is data in the manual table, that is where the value is pulled from. Otherwise, data is pulled from the original data table.
I have a table with a bunch of different fields. One is named period.
The period is not part of the raw data but I run a query when I import new data to the database that gives each record a period.
Now I need a delete query that will delete all the records that have the same period as what is selected in a combobox.
The values in the combobox come from a calendar table that contain all the possible values that could be in that period column at any time.
This is the basic query i thought would solve this issue but it tells me it is going to delete 0 rows every time I run it:
DELETE *
FROM PlanTemp
WHERE PlanTemp.period = Forms![Plan Form]!Combo163;
If you don't need the key field, just remove it.
Look at the "PROPERTIES" section and look at the column names.
Ether remove it there, or from your QUERY source.
You can also look at the Data section of the properties, and change your BOUND column, to Column 2... or whatever holds the data you want to use.
I have a DataGridView in a form which displays a client list with the columns ID, First Name, Last Name, Address. I also included a TextBox to perform the search query. I want to filter my DataGridView based from the given columns using a single TextBox (like a multi data filter/search where I can select from those four columns by typing on a single TextBox).
The question is: am I required to create a binding source for here (I populate my DataGridView using sql database) or is there a way to create filters without having to add a binding source?
You don't populate your grid using a sql database. You populate your grid from a SQL Server database suing something else in between, e.g. a SqlDataAdapter and a DataTable.
A BindingSource is supposed to be a one-stop shop for working with bound data so, while you don't have to use one, I would recommend doing so. Whether it can help you filter your data depends on what it's bound to. The BindingSource doesn't actually do the work of filtering itself but rather passes the work on to the underlying IBindingListView implementation if there is one. For instance, if the underlying data source is a DataTable then the RowFilter of its DefaultView will be used. You could set the DefaultView.RowFilter yourself.
If you want to do all the heavy lifting yourself then you could also search the grid yourself and then hide the rows that don't match. Those rows would still exist though, so you'd have to take that into account when using the data in code.
You have to create a query to retrive a data using like keyword by passing parameter value in form
Example:
pass the parameter from
form(cmd.parameters.add(nvarchar, 20).value = "textbox.text")
create a stored procedure
CREATE PROCEDURE procedure_name
#searchvalue varchar(20)
AS
BEGIN
SELECT
ID, FirstName, LastName, Address
FROM
tablename
WHERE
FirstName LIKE '%#SearchTerm%'
END
This above stored procedure will retrieve all the rows where the FirstName column value corresponds to that name
Then pass the result to gridview
I need to create a pivot table at the front end after retrieving data from the DB in a datatable and need to update the values of my grid with this data.
I have gone through many articles/blogs but they all demonstrate it by using one Data Value column. But in my scenario, I have 8 Data value columns to be pivoted.
Data To Pivot
Pivoted Data
Do someone has idea how to do it efficiently at the front end?
Would it be a good idea to embed the data in excel, create the Pivot there and retrieve the required data from excel?