MySqlDataAdapter Constructor(MySqlCommand)

In This Topic

Syntax
Remarks
Example
Requirements
See Also

Initializes a new instance of the MySqlDataAdapter class with the specified MySqlCommand as the %% property.

Syntax

Visual Basic
C#

public MySqlDataAdapter( 
   MySqlCommand selectCommand
)

'Declaration
 
Public Function New( _
   ByVal selectCommand As MySqlCommand _
)

Parameters

selectCommand: A MySqlCommand that contains SQL SELECT statement, and is set as the SelectCommand property of the MySqlDataAdapter.

Remarks

This implementation of the MySqlDataAdapter constructor sets the SelectCommand property to the value specified in the parameter.

When you create an instance of MySqlDataAdapter, the following read/write properties are set to their default values, as shown in the table.

Properties	Default Value
MissingMappingAction	MissingMappingAction.Passthrough
MissingSchemaAction	MissingSchemaAction.Add

You can change the value of any of these properties through a separate call to the property.

Example

The following example creates a MySqlDataAdapter, sets some of its properties, retrieves data from a table, and displays it.

csharp

public void CreateDataAdapter(MySqlConnection myConnection)
{
  MySqlCommand myCommand = new MySqlCommand("SELECT DeptNo, DName FROM Test.Dept", myConnection);
  MySqlDataAdapter myAdapter = new MySqlDataAdapter(myCommand);
  myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
  DataSet myDataSet = new DataSet();
  myAdapter.Fill(myDataSet,"Dept");
  //Get all data from all tables within the dataset
  foreach(DataTable myTable in myDataSet.Tables)
  {
    foreach(DataRow myRow in myTable.Rows)
    {
      foreach (DataColumn myColumn in myTable.Columns)
      {
        Console.Write(myRow[myColumn]+"\t");
      }
      Console.WriteLine();
    }
    Console.WriteLine();
  }
}

Visual Basic

Public Sub CreateDataAdapter(ByVal myConnection As MySqlConnection)
  Dim myCommand As MySqlCommand = New MySqlCommand("SELECT DeptNo, DName FROM Test.Dept", myConnection)
  Dim myAdapter As MySqlDataAdapter = New MySqlDataAdapter(myCommand)
  myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
  Dim myDataSet As DataSet = New DataSet
  myAdapter.Fill(myDataSet, "Dept")
  Dim myTable As DataTable
  Dim myRow As DataRow
  Dim myColumn As DataColumn
  ' Get all data from all tables within the dataset
  For Each myTable In myDataSet.Tables
    For Each myRow In myTable.Rows
      For Each myColumn In myTable.Columns
        Console.Write(myRow(myColumn) & Chr(9))
      Next myColumn
      Console.WriteLine()
    Next myRow
    Console.WriteLine()
  Next myTable
End Sub

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

MySqlDataAdapter Class
MySqlDataAdapter Members
Overload List
MySqlConnection Class
MySqlCommand Class

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