this is my select query with where clause every time I call it the datatable is empty and list count is 0 please correct my select query or ado.net code. I want to get data from the SQL server from these parameters but I don’t know my SQL query is wrong or the ado.net code is wrong
I normally use DataSet because It is very flexible. Recently I am assigned code optimization task , To reduce hits to the database I am changing two queries in a procedure. one Query returns the count and the other returns the actual data. That is , My stored procedure returns two tables. Now, I know how to read both tables using DataSets, But I need to read both tables using DataReader. In search of that I found This.
I am creating an application for a asp.net class that I am taking. One of the pages in the application needs to allow a user to search for a specific student via last name or user ID. When the student is found the page should display the students data and his/her class schedule.
I have a table which contains null values and I need to get data from the table using SqlDataReader. I can’t figure out how I can safely cast DBNull to int.
I’m confused a lot about connected model and disconnected in entity framework .
I wanted to use nested SqlDataReader in the code below but I couldn’t make it.I get “System.InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first” with the code. Any Suggestions
I have the following code.
I have a SQLDataReader that returns three integers. However, there are occasions when two of the integers will return null values.
I am having problems with this grid view. I am populating it with a query. However, it will not populate or even appear if I use a while(reader.Read()) structure. Without the while structure, it works fine. However, I need to access two specific fields. The code is below.
i have a form with a collection of about five drop down . i have my query as follows .