Execute Method (SqlStatement)

In This Topic

Executes the statement and returns result set.

Syntax

Visual Basic
C#

'Declaration
 
Public Function Execute() As IDataReader

public IDataReader Execute()

Return Value

Result set returned by the statement execution.

Remarks

This method is an alternative to Execute and ExecuteNext methods. It allows you to execute statements individually in any order. Note that Execute of SqlStatement does not generate Error or Progress event.

Example

This sample shows how to retrieve collection of statements that make up the script and execute them one by one.

csharp

string script =

  "INSERT INTO DEPT VALUES (10,'ACCOUNTING','NEW YORK');"+
  "INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');"+
  "INSERT INTO DEPT VALUES (30,'SALES','CHICAGO');"+
  "INSERT INTO DEPT VALUES (40,'OPERATIONS','BOSTON');"+
  "SELECT * FROM DEPT";
SQLiteConnection sqConn = new SQLiteConnection(
    "DataSource=mydatabase.db;");
SQLiteScript sqScript = new SQLiteScript(script,sqConn);
SqlStatementCollection sqColl = sqScript.Statements;
IDataReader sqReader;
sqConn.Open();
foreach (SqlStatement sqStatement in sqColl)
{
  Console.WriteLine(sqStatement.Text);
  try
  {
    sqReader = sqStatement.Execute();
    Console.WriteLine("  Records affected " + sqReader.RecordsAffected); 
    while (sqReader.Read()) 
    { 
      Console.WriteLine(sqReader.GetString(0)); 
    } 
    sqReader.Close(); 
    Console.WriteLine();
  }
  catch
  {
    Console.WriteLine("  Failed");
  }
}
sqConn.Close();

Visual Basic

Dim script As String = _

    "INSERT INTO DEPT VALUES (10,'ACCOUNTING','NEW YORK');" + _
    "INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');" + _
    "INSERT INTO DEPT VALUES (30,'SALES','CHICAGO');" + _
    "INSERT INTO DEPT VALUES (40,'OPERATIONS','BOSTON');" + _
    "SELECT * FROM DEPT"
Dim sqConn As SQLiteConnection = New SQLiteConnection( _
    "DataSource=mydatabase.db;")
Dim sqScript As SQLiteScript = New SQLiteScript(script, sqConn)
Dim sqColl As SqlStatementCollection = sqScript.Statements
Dim sqReader As IDataReader
sqConn.Open()
For Each sqStatement As SqlStatement In sqColl
  Console.WriteLine(sqStatement.Text)
  Try
    sqReader = sqStatement.Execute()
    Console.WriteLine("  Records affected " & sqReader.RecordsAffected)
    While sqReader.Read()
      Console.WriteLine(sqReader.GetString(0))
    End While
    sqReader.Close()
    Console.WriteLine()
  Catch ex As Exception
    Console.WriteLine("  Failed")
  End Try
Next sqStatement
sqConn.Close()

Reference

SqlStatement Class
SqlStatement Members
Text Property

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