用代码备份数据库的时候出错啦,找不到原因,请各位高手帮帮忙啦!!!!!!!!
private SaveFileDialog sfd;
private string localFilePath;
//备份数据库
private void btn_backup_Click(object sender, EventArgs e)
{
sfd=new SaveFileDialog ();
sfd.FileName = "备份数据库.bak";
sfd.Filter = "备份|*.bak";
sfd.FilterIndex = 1;
sfd.InitialDirectory = @"..\..\备份";
if (!Directory.Exists(sfd.InitialDirectory))
{
Directory.CreateDirectory(sfd.InitialDirectory);
}
sfd.RestoreDirectory = true;
if (sfd.ShowDialog() == DialogResult.OK)
{
localFilePath = sfd.FileName.ToString();
if (backupDB())
{
MessageBox.Show("备份成功!");
}
}
}
//备份数据库
private bool backupDB()
{
bool result = false;
SqlCeConnection conn = new SqlCeConnection();
conn.ConnectionString =@"Data Source=G:\数据库备份与还原\数据库备份与还原\Database1.sdf";
conn.Open();
string sql = @"backup database database1 to disk='"+sfd.FileName.ToString()+"'";
SqlCeCommand comm = new SqlCeCommand(sql, conn);
comm.CommandType = CommandType.Text;
try
{
if (
comm.ExecuteNonQuery() > 0)
{
result = true;
}
else
{
result = false;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
finally
{
conn.Close();
}
return result;
}
在comm.ExecuteNonQuery()这个地方报错了,
错误提示: