UniDataAdapter Constructor(UniCommand)

In This Topic

Initializes a new instance of the UniDataAdapter class with the specified UniCommand as the %% property.

Syntax

Visual Basic
C#

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

public UniDataAdapter( 
   UniCommand selectCommand
)

Parameters

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

Remarks

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

When you create an instance of UniDataAdapter, 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 UniDataAdapter, sets some of its properties, retrieves data from a table, and displays it.

csharp

public void CreateDataAdapter(UniConnection myConnection)
{
  UniCommand myCommand = new UniCommand("SELECT DeptNo, DName FROM Test.Dept", myConnection);
  UniDataAdapter myAdapter = new UniDataAdapter(myCommand);
  myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
  DataSet myDataSet = new DataSet();
  myAdapter.Fill(myDataSet,"Departments");
  //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 UniConnection)
  Dim myCommand As UniCommand = New UniCommand("SELECT DeptNo, DName FROM Test.Dept", myConnection)
  Dim myAdapter As UniDataAdapter = New UniDataAdapter(myCommand)
  myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
  Dim myDataSet As DataSet = New DataSet
  myAdapter.Fill(myDataSet, "Departments")
  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

UniDataAdapter Class
UniDataAdapter Members
Overload List
UniConnection Class
UniCommand Class

Send Feedback