Way to load data between dates in report viewer in C#

问题

I am trying to get data between two dates in a report viewer control in windows forms. Filtering report data, so I modified the dataset using parameters to

select SN,invoice_date,product_code........ where invoice_date >= @date1 and invoice_date <= @date2

I tried this also

select SN,invoice_date,product_code........ where invoice_date between @date1 and @date2

But the query is not returing any data, the datatype I used in SQL Server is date, and I changed the properties of the dataset @date1 and @date2 into date. So the problem is the datetimepicker am using is not working as it is adding time to the value. And I tried to validate the datetimepicker into something like

datetimepicker1.value.date.toshortdatestring()   even tried  datetimepicker1.value.tostring()

But the problem is, it will generate an error that system.datetime cannot be convert into string. I even change the datatype of the @date1 and @date2 into varchar in the dataset properties but still not loading.

So this is the code tried

this.Sales_InvoiceTableAdapter.FillByget(this.ProductREP.Sales_Invoice, ProductFrom.Value, ProductTo.Value, txtproductcode.Text);

this.Sales_InvoiceTableAdapter.FillByget(this.ProductREP.Sales_Invoice, ProductFrom.Value.Date, ProductTo.Value.Date, txtproductcode.Text);

What am I missing? I am using C# with SQL Server.

回答1:

Assuming that the signature of Sales_InvoiceTableAdapter.FillByget is FillByget(string invoice, DateTime from, DateTime to, string productCode), then you should not need to convert to a string and you should check you're setting the time portion appropriately.

this.Sales_InvoiceTableAdapter.FillByget(this.ProductREP.Sales_Invoice, ProductFrom.Value.Date, ProductTo.Value.Date.AddDays(1), txtproductcode.Text);

Given a ProductFrom.Value and ProductTo.Value equal to 2020-04-28T10:55:00, the above code will result in ProductFrom.Value = 2020-04-28T00:00:00and ProductTo.Value = 2020-04-29T00:00:00.
If you want to only get values on that specific day (excluding midnight), then subtract 1 second from your final to value. e.g. ProductTo.Value.Date.AddDays(1).Subtract(TimeSpan.FromSeconds(1)).

来源：https://stackoverflow.com/questions/61466722/way-to-load-data-between-dates-in-report-viewer-in-c-sharp