Posts by DLopes • 127 points
9 posts
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1
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answer149
viewsQ: Problems updating data with empty Datetime
I need help with the following... I need to update several data at once through my application, however, one of the conditions is that the field exit in the database is empty as it will be updated.…
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votes2
answers51
viewsA: Resolve error Value of 'X' is not Valid for 'Selectedindex', where X is any Index value
I was able to solve the problem by using the answer published here along with the reply of this link. I hope you help someone else.…
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votes2
answers51
viewsQ: Resolve error Value of 'X' is not Valid for 'Selectedindex', where X is any Index value
Hello. I asked a question days ago about capturing the value of a cell gridview in a Form secondary and send it to a combobox in the Form primary. I have received a satisfactory response which…
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votes1
answer406
viewsQ: Send data from a Gridview in a Form to Combobox in another Form
I’m trying to send the data of a gridviewin a second Formfor a comboboxin the form but I haven’t been successful. I wonder if there is a way to do this without sending as a parameter, since I will…
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answer5608
viewsQ: Is there already an open Datareader associated with this command that should be closed first?
I have a combobox that is receiving data from a table of my BD Mysql. So far so good. However, when I return to the home screen, where it is, it ends up giving a problem (There is already a…
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answer53
viewsQ: Dataset does not recognize LIKE and search parameters
Good night.I have a table in the Mysql database and am using a Dataset to handle it in my Windows Form project. The problem is that when I try to use a query with LIKE, it does not recognize the…
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votes1
answer319
viewsQ: Update Chart with data from a column in Gridview
I have in my project a Gridview where I manually insert data in the last column (index 7) and a Piechart that must be updated according to this last column, however, as much as I can get the data…
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votes1
answer53928
viewsQ: How to resolve Object Reference Not Set To An Instance Of An Object
I have a serious problem. I have a Gridview populated with data from a Mysql BD working perfectly. I also have a button to turn it into a table to be inserted into a PDF using iTextSharp that also…
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votes1
answer2159
viewsQ: Pick 2-column value in Gridview to perform calculation
I am developing a simple Input/Output system of users in an environment and I have a Grid with some data and among them 2 fields of type Datetime, being them Input and Output. I need to take the…