Question

I want to search person by auto increment ID (textbox and one button). I have used dataset and in that

Fill,Getdata --> configure

SQL statement :

SELECT ID, FirstName, LastName, ContactNo, Address, Date, NameOfJob, OtherJob,
Impression, BackPage, NameOfPage, PaperSize, PrintingSize,
DesignRupees, JobRupees, Matter, BlackPlate, BlackPlateRupees, SinglePlate, 
SinglePlateRupees, MultiPlate, MultiPlateRupees, Platename, 
Lamination, Creasing, Binding, Other, Total, Receive, Due, LastRemaining
FROM bill WHERE  ID=@ID

after that I have run the program then 2 error shows:

1. cannot convert from string to decimal

2. The best overloaded method match for WindowsFormsApplication9.DataSet1TableAdapters.billTableAdapter.Fill(WindowsFormsApplication9.DataSet1.billDataTable, decimal) has some invalid arguments error in this line

   this.billTableAdapter.Fill(this.DataSet1.bill, txt_search.Text);

Answer 1

So your errors are:

cannot convert from string to decimal

and

WindowsFormsApplication9.DataSet1TableAdapters.billTableAdapter.Fill(WindowsFormsApplication9.DataSet1.billDataTable, decimal);

if you look at what you are trying to put into the Fill() method:

this.billTableAdapter.Fill(this.DataSet1.bill, txt_search.Text);

What your errors are telling you is that it can’t convert a string into a decimal. Your fill method is requiring a decimal as it’s second parameter, but you are providing it a string (txt_search.Text).

You need to Convert/Parse the string into a decimal first, then call your .Fill() method with this value.

Have a look into decimal.Parse() and decimal.TryParse().