Murat ÇELİKADAMQuerying Information in a Database
CONTENTSRelational Database SystemsCreating Database with SQL ServerReading Data with LINQRequirements to Get Data From Database
Step by StepWriting Data to on DataBase SummaryExamplesQuestions
Relational Database Systems Oracle FoxPro IBM DB2 Linter Microsoft Access Microsoft SQLServer MySQL PostgreSQL SQLite
Creating Database with MySQL
Creating Database with MySQL
Creating Database with MySQL
Creating Database with MySQL
Creating Database with MySQL
Reading Data with LINQ
Reading Data with LINQ
Reading Data with LINQ
Reading Data with LINQ
Requirements to Get Data From Database Step by StepAdding Namespace Creating Connection and Opening itDetermine the SqlDataAdapterReading DataClosing Connection
Adding NamespaceSystem.Data.SqlClient (the.NET Framework
Data Provider for SQL Server)System.Data.Odbc (the.NET Framework Data
Provider for ODBC)System.Data.OracleClient (the .NET
Framework Data Provider for Oracle)System.Data.OleDb (the.NET Framework
Data Provider for OLE DB)
ConnectionThe Connection Object is a part
of ADO.NET Data Provider and it is a unique session with the Data Source
The Connection Object is Handling the part of physical communication between the C# application and the Data Source
Opening connection is like opening a folder
ConnectionSqlConnection conn = new SqlConnection();Con.ConnectionString = @“…”;Con.Open();
SqlDataAdapterA data adapter is an object used to exchange
data between a data source and a data set
SqlDataAdapterSqlDataAdapter adapter = new SqlDataAdapter(command); DataTable datatable = new DataTable(); adapter.Fill(datatable);
Reading Data and Closing ConnectionDataGridView displays data from SQL
databases. This tutorial shows how to display a specific
table from a database and display it on a DataGridView.
This is done with a DataAdapter
DataGridView.DataSource = DataTable;Conn.Close(); //Important to close connection
Writing Data to on DataBase Use SqlCommand Use ExecuteNonQuery
string Kmt = "INSERT INTO Customers (CustomerID,CompanyName,ContactName,City) VALUES ('" + textBox1.Text + "','" + textBox2.Text + "', …) ";SqlCommand komut = new SqlCommand(Kmt, baglanti);komut.ExecuteNonQuery();
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