DynamicsConnection Class

In This Topic

Represents an open connection to Dynamics CRM.

Syntax

Visual Basic
C#

'Declaration
 
Public Class DynamicsConnection 
   Inherits Devart.Data.SqlShimConnection
   Implements System.ComponentModel.IComponent, System.Data.IDbConnection, System.ICloneable, System.IDisposable

public class DynamicsConnection : Devart.Data.SqlShimConnection, System.ComponentModel.IComponent, System.Data.IDbConnection, System.ICloneable, System.IDisposable

Remarks

A DynamicsConnection object represents a unique connection to Dynamics CRM. Use it in conjunction with DynamicsCommand, DynamicsDataReader, DynamicsDataAdapter or other components for convenient interoperation with Dynamics CRM.

When you create an instance of DynamicsConnection, all properties are set to their initial values. For a list of these values, see ConnectionString.

If the DynamicsConnection goes out of scope, it is not closed. Therefore, you must explicitly close the connection by calling Devart.Common.DbConnectionBase.Close.

Note that DynamicsConnection instance is not guaranteed to be thread safe. You should avoid using the same DynamicsConnection in several threads at the same time. It is recommended to open a new connection per thread and to close it when the work is done. Actually, connections will not be created/disposed every time with the Pooling=true; connection string option - connections will be stored at connection pool. This boosts performance greatly.

A single DynamicsConnection can be used by many DynamicsCommand objects on the assumption that all operations will be done consecutively. In other words, you can not execute a SQL statement while an asynchronous operation is in progress.

This class supports cross-form data binding with the InterForm Technology.

Example

The following example creates a DynamicsCommand and a DynamicsConnection. The DynamicsConnection is opened and set as the Connection property. The example then calls ExecuteNonQuery method, and closes the connection. To accomplish this, the ExecuteNonQuery is passed a connection string and a query string that is SQL INSERT statement.

csharp

public void InsertRow(string dynamicsConnectionString)
{
  // If the connection string is empty, use default.
  if(dynamicsConnectionString == "")
  {
    dynamicsConnectionString = 
        "Server=https://your_company.crm4.dynamics.com;User [email protected];Password=A123456789;";
  }
  DynamicsConnection myConn = new DynamicsConnection(dynamicsConnectionString);
  string myInsertQuery = "INSERT INTO Contact (FirstName,LastName) VALUES ('John','Smith')";
  DynamicsCommand dynamicsCommand = new DynamicsCommand(myInsertQuery);
  dynamicsCommand.Connection = myConn;
  myConn.Open();
  try
  {
    dynamicsCommand.ExecuteNonQuery();
  }
  finally
  {
    myConn.Close();
  }
}

Visual Basic

Public Sub InsertRow(dynamicsConnectionString As String)
  ' If the connection string is empty, use default.
  If dynamicsConnectionString = "" Then
    dynamicsConnectionString = _
        "Server=https://your_company.crm4.dynamics.com;User [email protected];Password=A123456789;"
  End If
  Dim myConn As New DynamicsConnection(dynamicsConnectionString)
  Dim myInsertQuery As String = "INSERT INTO Contact (FirstName,LastName) VALUES ('John','Smith')"
  Dim dynamicsCommand As New DynamicsCommand(myInsertQuery)
  dynamicsCommand.Connection = myConn
  myConn.Open()
  Try
    dynamicsCommand.ExecuteNonQuery()
  Finally
    myConn.Close()
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.ComponentModel.Component
         System.Data.Common.DbConnection
            Devart.Common.DbConnectionBase
               Devart.Data.SqlShimConnection
                  Devart.Data.Dynamics.DynamicsConnection

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

DynamicsConnection Members
Devart.Data.Dynamics Namespace
DynamicsDataAdapter Class
DynamicsCommand Class

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