public ColumnMetaCollection GetTableSchema(string table)
{
Dictionary <string, string> comments = GetColumnComment(table);
ColumnMetaCollection metas = new ColumnMetaCollection();
MySqlConnection connection = new MySqlConnection(this.ConnectionString);
connection.Open();
MySqlCommand cmd = new MySqlCommand("select * from " + table + " limit 0,1", connection);
using (MySqlDataReader ddr = cmd.ExecuteReader(CommandBehavior.KeyInfo | CommandBehavior.CloseConnection))
{
if (ddr != null && !ddr.IsClosed)
{
//得元数据
DataTable dt = ddr.GetSchemaTable();
for (int i = 0, len = dt.Rows.Count; i < len; i++)
{
ColumnMeta columnMeta = new ColumnMeta();
columnMeta.ColumnName = dt.Rows[i][0].ToString();
columnMeta.ColumnOridinal = TypeConverter.ObjectToInt(dt.Rows[i][1], 0);
columnMeta.ColumnSize = TypeConverter.ObjectToInt(dt.Rows[i][2], 4);
columnMeta.IsUnique = TypeConverter.ObjectToBool(dt.Rows[i][5], false);
columnMeta.IsKey = TypeConverter.ObjectToBool(dt.Rows[i][6], false);
columnMeta.FieldType = (Type)dt.Rows[i][11];
columnMeta.FieldTypeName = columnMeta.FieldType.Name;
columnMeta.AllowDBNull = TypeConverter.ObjectToBool(dt.Rows[i][12], true);
if (comments.ContainsKey(columnMeta.ColumnName))
{
columnMeta.Comment = comments[columnMeta.ColumnName];
if (!string.IsNullOrEmpty(columnMeta.Comment))
{
columnMeta.Comment = columnMeta.Comment.Replace("\r", "").Replace("\n", "");
}
}
if (dt.Rows[i][0].ToString().IndexOf(" ") > -1)
{
continue;
}
metas.Add(columnMeta);
}
}
}
connection.Close();
return(metas);
}
public ColumnMetaCollection GetTableSchema(string table)
{
ColumnMetaCollection metas = new ColumnMetaCollection();
SqlConnection connection = new SqlConnection(this.ConnectionString);
connection.Open();
SqlCommand cmd = new SqlCommand("select * from " + table, connection);
using (SqlDataReader ddr = cmd.ExecuteReader(CommandBehavior.KeyInfo))
{
if (ddr != null && !ddr.IsClosed)
{
//得元数据
DataTable dt = ddr.GetSchemaTable();
//StringBuilder builder = new StringBuilder();
for (int i = 0, len = dt.Rows.Count; i < len; i++)
{
//for (int offset = 0; offset < dt.Columns.Count; offset++)
//{
// builder.AppendLine(dt.Columns[offset].ColumnName+"=>(index:"+offset+")=>"+dt.Rows[i][offset]);
//}
ColumnMeta columnMeta = new ColumnMeta();
columnMeta.ColumnName = dt.Rows[i][0].ToString();
columnMeta.ColumnOridinal = TypeConverter.ObjectToInt(dt.Rows[i][1], 0);
columnMeta.ColumnSize = TypeConverter.ObjectToInt(dt.Rows[i][2], 4);
columnMeta.IsUnique = TypeConverter.ObjectToBool(dt.Rows[i][5], false);
columnMeta.IsKey = TypeConverter.ObjectToBool(dt.Rows[i][6], false);
columnMeta.FieldTypeName = ((Type)dt.Rows[i][12]).Name;
columnMeta.FieldType = (Type)dt.Rows[i][12];
columnMeta.AllowDBNull = TypeConverter.ObjectToBool(dt.Rows[i][13], true);
if (dt.Rows[i][0].ToString().IndexOf(" ") > -1)
{
continue;
}
metas.Add(columnMeta);
}
//File.WriteAllText("d:\\struct.txt", builder.ToString());
}
}
return(metas);
}
