public static void LoadTableField(string conn, Dictionary <string, List <DBTable> > list, ProgressBar pBar)
{
try
{
pBar.Minimum = 0;
pBar.Maximum = list.Count;
Thread thread = new Thread(delegate()
{
int current = 0;
foreach (var t in list)
{
DifferentForm.BeginInvoke(new MethodInvoker(delegate
{
pBar.Value = current;
}));
string sql = string.Empty;
DataTable dt = null;
string dbType = GetDBType(conn);
switch (dbType)
{
case Data.XmlMysql:
#region MySql数据库读取每张表和视图的字段
if (t.Key.StartsWith(ViewFlag))
{
sql = "SELECT * FROM user_tab_cols WHERE table_name ='" + t.Key.Replace(ViewFlag, "") + "'";
}
else
{
sql = "SHOW FULL COLUMNS FROM " + t.Key;
}
dt = new MySqlHelper().ExecuteDataTable(conn, CommandType.Text, sql, null);
foreach (var field in dt.AsEnumerable().ToList())
{
DBTable item = new DBTable();
item.Field = field["Field"].Ustring();
int loc = field["Type"].Ustring().IndexOf("(");
if (loc > 0)
{
item.Type = field["Type"].ToString().Substring(0, loc);
item.Length = field["Type"].ToString().Substring(loc + 1).TrimEnd(')').Uint();
}
else
{
item.Type = field["Type"].ToString();
}
item.CanNull = (field["Null"].Ustring().ToLower() == "yes" ? true : false);
item.Comment = field["Comment"].Ustring();
list[t.Key].Add(item);
}
#endregion
break;
case Data.XmlOracle:
if (t.Key.StartsWith(ViewFlag))
{
sql = "SELECT * FROM user_tab_cols WHERE table_name ='" + t.Key.Replace(ViewFlag, "") + "'";
}
else
{
sql = "select COLUMN_NAME,DATA_TYPE,DATA_LENGTH,NULLABLE from USER_TAB_COLS where TABLE_NAME='" + t.Key + "' And HIDDEN_COLUMN='NO'";
}
dt = new OracleHelper().ExecuteDataTable(conn, CommandType.Text, sql);
foreach (var field in dt.AsEnumerable().ToList())
{
DBTable item = new DBTable();
item.Field = field["COLUMN_NAME"].ToString();
item.Type = field["DATA_TYPE"].ToString();
item.Length = field["DATA_LENGTH"].Uint();
item.CanNull = (field["NULLABLE"].Ustring() == "Y" ? true : false);
list[t.Key].Add(item);
}
break;
case Data.XmlSqlServer:
#region SqlServer数据库读取每张表的字段
sql = @"SELECT table_name,
column_name,
ISNULL(column_default,'') AS column_default,
is_nullable,
data_type,
ISNULL(ISNULL(ISNULL(character_maximum_length,numeric_precision),datetime_precision),1) AS column_length
FROM information_schema.columns
WHERE NOT table_name IN('sysdiagrams','dtproperties') and table_name='" + t.Key +
"'";
dt = new SqlServerHelper().ExecuteDataTable(conn, CommandType.Text, sql, null);
foreach (var field in dt.AsEnumerable().ToList())
{
DBTable item = new DBTable();
item.Field = field["column_name"].ToString();
item.Type = field["data_type"].ToString();
item.Length = field["column_length"].Uint();
item.CanNull = (field["is_nullable"].Ustring().ToLower() == "yes" ? true : false);
list[t.Key].Add(item);
}
#endregion
break;
}
current++;
}
DifferentForm.BeginInvoke(new MethodInvoker(delegate
{
pBar.Visible = false;
}));
});
thread.IsBackground = true;
thread.Start();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
