Saving to and retrieving from database

Question

Hi,
How can I save my program's data in a database and how can I view the data?
S.A.T

Answer 1

You can save data to a database using the SqlCommand.ExecuteNonQuery method:
https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommand.executenonquery(v=vs.110).aspx
string query = "INSERT INTO TABLE (col1) VALUES (1)";
using (SqlConnection connection = new SqlConnection(
"your connection string...."))
SqlCommand command = new SqlCommand(queryString, connection);
command.Connection.Open();
command.ExecuteNonQuery();
You will have to supply a connection string to the database:
http://www.connectionstrings.com/sql-server/
...and an SQL query (INSERT, UPDATE) to be executed against the database.
You can retrieve data similarly using a SqlDataAdapter that fills a DataSet:
http://www.dotnetperls.com/sqldataadapter
DataTable t = new DataTable();
using (SqlConnection c = new SqlConnection(
"connection string..."))
c.Open();
// 2
// Create new DataAdapter
using (SqlDataAdapter a = new SqlDataAdapter(
"SELECT * FROM EmployeeIDs", c))
// 3
// Use DataAdapter to fill DataTable
a.Fill(t);
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