DataSet Class

Overview

The DataSet class is the concrete implementation of IDataSet in the PocoDataSet.Data assembly. It is the root container for tabular data and provides collections of tables and relations.

Tables are stored in a dictionary keyed by table name. Relations are stored as a list of IDataRelation objects describing logical parent/child relationships between tables.

Namespace and Assembly

Namespace: PocoDataSet.Data
Assembly: PocoDataSet.Data.dll

Declaration

public class DataSet : IDataSet
{
    public string? Name { get; set; }
    public IReadOnlyList<IDataRelation> Relations { get; set; } = new();
    public IReadOnlyDictionary<string, IDataTable> Tables { get; set; } = new();

    // Indexer
    public IDataTable this[string tableName] { get; }
}

Usage Notes

• Use DataSet as the default implementation of IDataSet when constructing data sets in application code.
• The Relations and Tables properties are initialized to empty collections, so they are safe to use immediately after construction.
• Higher-level code often interacts with IDataSet rather than DataSet directly to preserve abstraction.
• The Name property is optional and can be used to label the data set for debugging or diagnostic output.

Usage Example

// 1. Create an empty data set
IDataSet dataSet = DataSetFactory.CreateDataSet();
dataSet.Name = "HumanResources";

// 2. Add a table
IDataTable departmentDataTable = dataSet.AddNewTable("Department");
departmentDataTable.AddColumn("Id", DataTypeNames.INT32);
departmentDataTable.AddColumn("Name", DataTypeNames.STRING);

// 3. Access tables through the Tables dictionary
IDataTable? table = null;
bool hasDepartment = dataSet.Tables.TryGetValue("Department", out table);

Members

Properties

• Name
  ?
• Relations
  ?
• Tables
  ?

 

Table of Content POCO DataSet PocoDataSet.Data

 

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Business Process Programming in .Net
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