private string GetAttributes(ColumnInfoModel c, Type csType)
{
TypeCode typeCode = Type.GetTypeCode(csType);
StringBuilder sb = new StringBuilder();
if (c.Length > 0 && typeCode == TypeCode.String)
{
sb.Append("length: " + c.Length + ", ");
}
if (c.Precision > 0)
{
if (csType.IsGenericType)
{
csType = Nullable.GetUnderlyingType(csType);
}
if (typeCode.In(TypeCode.Single, TypeCode.Double, TypeCode.Decimal))
{
sb.Append("precision: " + c.Precision + ", ");
}
}
if (sb.Length > 0)
{
sb.Insert(0, "[Validate(").Remove(sb.Length - 2, 2).Append(")]");
}
if (c.AutoGenerate)
{
sb.Append("[AutoGenerate]");
}
return(sb.ToString());
}
public ColumnInfoModel[] GetColumns(string tableName)
{
if (tableName.IsNullOrWhiteSpace())
{
throw new ArgumentException("", nameof(tableName));
}
string sql = @"
SELECT
t1.column_name AS 'Name', CONVERT(bit, t3.isnullable) AS 'Nullable',
t1.data_type AS 'DbType', ISNULL(t1.character_maximum_length,-1) AS 'Length', ISNULL(t1.numeric_scale,0) AS 'Precision',
ISNULL(t2.value, '') AS 'Description', CONVERT(bit,t3.colstat) AS 'AutoGenerate'
FROM information_schema.columns t1
LEFT JOIN sys.extended_properties t2
ON t2.major_id=OBJECT_ID(t1.table_name)
AND t2.minor_id=t1.ordinal_position
AND t2.name='MS_Description'
AND t2.class_desc='OBJECT_OR_COLUMN'
LEFT JOIN syscolumns t3
ON t3.id=OBJECT_ID(t1.table_name)
AND t3.name=t1.column_name
WHERE t1.table_name=@p0";
DataTable dt = _db.GetDataTable(new SqlCommand(sql), new SqlParameter("@p0", tableName));
ColumnInfoModel[] result = new ColumnInfoModel[dt.Rows.Count];
for (int i = 0; i < dt.Rows.Count; i++)
{
DataRow r = dt.Rows[i];
ColumnInfoModel col = new ColumnInfoModel();
foreach (var p in typeof(ColumnInfoModel).GetProperties())
{
//bool 要convert
p.SetValue(col, p.GetType() == typeof(bool) ? Convert.ToBoolean(r[p.Name]) : r[p.Name], null);
}
result[i] = col;
}
return(result);
}
