以编程方式创建SQLCE数据库

问题描述

以下是我以编程方式创建SQL CE数据库的代码：

Following is my code to create SQL CE database programmatically:

/* get the Path */
var directoryName = System.IO.Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
var fileName = System.IO.Path.Combine(directoryName, "Foo2Database.sdf");

/* check if exists */
if (File.Exists(fileName))
    File.Delete(fileName);

string connStr = @"Data Source = " + fileName;

/* create Database */
SqlCeEngine engine = new SqlCeEngine(connStr);
engine.CreateDatabase();

/* create table and columns */
using (SqlCeConnection conn = new SqlCeConnection(connStr))
{
    using (SqlCeCommand cmd = new SqlCeCommand(@"CREATE TABLE FooTable (Foo_ID int, FooData NVARCHAR(200))", conn))
    {
        try
        {
            conn.Open();
            cmd.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }
        finally
        {
            conn.Close();
        }

    }
}

推荐答案

我使用过SQLCE 3.1和SharpDevelop，请尝试下面的代码，看看这是否是您想要的：

I have worked with SQLCE 3.1 and SharpDevelop, Try this code and see if this is what you want:

string connStr = "Data Source = FooDatabase.sdf; Password = SomePassword";

if (File.Exists("FooDatabase.sdf"))
    File.Delete("FooDatabase.sdf");

SqlCeEngine engine = new SqlCeEngine(connStr);
engine.CreateDatabase();

SqlCeConnection conn = null;


try
{
    conn = new SqlCeConnection(connStr);
    conn.Open();

    SqlCeCommand cmd = conn.CreateCommand();
    cmd.CommandText = "CREATE TABLE FooTable(col1 int, col2 ntext)";
    cmd.ExecuteNonQuery();
}
catch
{

}
finally
{
    conn.Close();
}

请注意，数据库只是一个文件，因此您可以检查数据库是否通过查看文件是否存在来存在，也可以通过删除文件来删除数据库。希望这会有所帮助。

Note that the database is just a file, so you can check if the database exists by looking if the file exists, also you can delete the database by deleting the file. Hope this helps.

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