C#C# Sqlite For WP7

C# sqite for wp7
源:http://code.google.com/p/csharp-sqlite/downloads/list

片代码示例:C#,
 

IsolatedStorageFile isf =
IsolatedStorageFile.GetUserStoreForApplication();

isf.DeleteFile(“test.db”);

 

using (SqliteConnection conn = new
SqliteConnection(“Version=3,uri=file:test.db”))

{

conn.Open();

 

using (SqliteCommand cmd = conn.CreateCommand())

{

cmd.CommandText = “CREATE TABLE test ( [id] INTEGER PRIMARY KEY,
[col] INTEGER UNIQUE, [col2] INTEGER, [col3] REAL, [col4] TEXT,
[col5] BLOB)”;

cmd.ExecuteNonQuery();

 

cmd.Transaction = conn.BeginTransaction();

cmd.CommandText = “INSERT INTO test(col, col2, col3, col4, col5)
VALUES(@col, @col2, @col3, @col4, @col5);SELECT last_insert_rowid();”;

cmd.Parameters.Add(“@col”, null);

cmd.Parameters.Add(“@col2”, null);

cmd.Parameters.Add(“@col3”, null);

cmd.Parameters.Add(“@col4”, null);

cmd.Parameters.Add(“@col5”, null);

 

DateTime start = DateTime.Now;

this.lstResult.Items.Add(“Inserting 100 Rows with transaction”);

 

for (int i = 0; i < 100; i++)

{

cmd.Parameters[“@col”].Value = i;

cmd.Parameters[“@col2”].Value = i;

cmd.Parameters[“@col3”].Value = i * 0.515;

cmd.Parameters[“@col4”].Value = “สวัสดี な. あ · か · さ · た · な ·
は · ま · や · ら · わ. 形容詞 hello ” + i;

cmd.Parameters[“@col5”].Value = Encoding.UTF8.GetBytes(“สวัสดี”);

 

object s = cmd.ExecuteScalar();

}

cmd.Transaction.Commit();

cmd.Transaction = null;

this.lstResult.Items.Add(“Time taken :” + DateTime.Now.Subtract( start
).TotalMilliseconds + ” ms.”);

 

cmd.CommandText = “SELECT * FROM test”;

using (SqliteDataReader reader = cmd.ExecuteReader())

{

while (reader.Read())

{

var bytes = (byte[])reader.GetValue(5);

this.lstResult.Items.Add(string.Format(“{0},{1},{2},{3},{4}, {5}”,

reader.GetInt32(0),

reader.GetInt32(1),

reader.GetInt32(2),

reader.GetDouble(3),

reader.GetString(4),

Encoding.UTF8.GetString(bytes, 0, bytes.Length)));

}

}

 

conn.Close();

}

}

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