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Closed 10 years ago.
How to show the progressbar while updating 10-30 thousand records in ms access database.
Without more details I can only offer a list of operation to be done:
First you need to know how many modified/inserted record are
present.
Then you should subscribe to the event RowUpdated of your
OleDbDataAdapter.
Set the progressbar initial value to zero and the maximum value to
the count of modified records.
In the RowUpdated event increment by one your progress bar value.
See for reference the OleDbDataAdapter docs on MSDN
Related
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Closed 9 years ago.
When I have for example only one record for administrators (only one administrator) with id and password, is it necessary to create a table administrator or not? Why?
There's nothing inherently wrong with a one record table. It's a function of your design. For example, an administrator is not a type of user so you wouldn't stick an administrator in the user's table. But that's a design decision.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 9 years ago.
I want to implement cache manager,for that I want to clear the cache after 15 days, how to implement this?
How will I get to know 15 days completed or not, How I can achieve this any idea?
The broad strokes: Store your desired cache expiration date, set a timer to go off on that date, and check on startup whether you're past the date. If either the timer goes off or the startup check is positive, clear the cache.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
What i am looking to do is to be able to create products with an expire date.
When the current date matches the expire date in the database it will change the boolean field on that product. (Boolean is visible/hidden).
This will also send out an email to say that the product has expired.
This needs to happen automatically every day or twice a day.
Any ideas on how to do this?
Use a cron job:
Run a job every (hour|day|whatever) that selects form the product table where expiry_date > current date (you didn't say which db you are using so syntax will vary)
For each result, send an email, set the flag to true and commit the update.
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Closed 11 years ago.
I am reading data from wordpad one by one which records the sale of grocery item by barcode. I want to store it in memory so that after reading the whole file I can calculate the total number of the same items sold by comparing the bar code.
Memory. There are several types of memory.
Any variable is a type of memory storage so one answer could be
dim s as string = "hi"
You can also use files as "memory"
Take a look at this
You should make a class to store your items, then use a List(Of T) to hold instances of the class.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I want to make an button that runs an action with the frequency from an number input in Visual Basic .NET . How do I do it? Could someone point me out the syntax of such an action?
#Jon, I think that's C++, I am talking about VB.Net.
#Adam Davis, VB.Net 3.5 and all that I want to do is use an number from "NumericUpDown" to give a button how many times the action the button has to do it.
Dim i as integer
For (i = 1 To InputNumber)
'Code here
Next
This should do the trick.
For i As Integer = 0 To CInt(NumericUpDown1.Value)
'Code to execute
Next