Linq 检测DbDataReader 对象中是否有特定名字的列存在

var cols = reader.GetSchemaTable()
.Rows
.OfType<DataRow>()
.Select(row => row["ColumnName"]);

public bool ColumnExists(IDataReader reader, string columnName)
{

return reader.GetSchemaTable()
.Rows
.OfType<DataRow>()
.Any(row => row["ColumnName"] == columnName);
}