Has anyone out here had any success in developing a solution that returns progress indication on filling a dataset from a SELECT query that they can post? You MUST know what the target is before you can compare anything to the target.I am basically looking for an example here so that I can figure out how to apply it to my own circumstance. The dataadapter has no knowledge of how may rows it is going to 'import' until it has finished.If the select statement was of the form SELECT COUNT(*), [other stuff], would SQL Server be efficient enough to only do the count once?
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are iterated over and each parameter variable in the update statement is replaced with the value for that parameter. Event Args e) private void da_Row Updating(object sender, Sql Row Updating Event Args e) object.
Single quote delimiters are added around the string values. The solution delimits the string values for the Category Name and Description fields in the Categories table from the Northwind database used in this example.
The first question you need to address is how much overhead is involved in retrieving the count first.
If the query is simple and efficient the overhead will be negible but if it is complex and/or inefficient then the overhead could be considerable.
I am basically looking for an example here so that I can figure out how to apply it to my own circumstance. The next question you have to address is the value of the progressinformation compared to the overhead in producing it.
Having progress information is all very nice, so long as it does notimpacton the perfomance of the overall application.
Finally, the statement is added to a // Namespaces, variables, and constants using System; using System. Ensure that strings, dates, and any other fields are properly delimited when values are substituted for parameter names in the , the solution remains fundamentally the same if you use your own custom updating logic.
Sql Client; private const String CATEGORIES_TABLE = "Categories"; private const String CATEGORYID_FIELD = "Category ID"; private Data Table dt; private Sql Data Adapter da; private Sql Command Builder cb; private String Builder sb; // . Event Args e) private void update Button_Click(object sender, System.
Of course, it would add to the amount of data being transferred and slow it down a bit :-( Or even use a stored procedure to select into a temporary table then return the count of records in that table and finally return the records.