Item[string] Indexer

Overview

Returns column metadata by its column name. This indexer is intended for scenarios where the column is required (for example, when building a search form or validating a business rule against a known schema). If the column does not exist, the indexer throws to fail fast.

Namespace and Assembly

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

Declaration

/// <summary>
/// Gets column metadata by column name.
/// </summary>
/// <param name="columnName">Column name.</param>
/// <returns>Column metadata.</returns>
/// <exception cref="System.Collections.Generic.KeyNotFoundException">Thrown when the column does not exist.</exception>
public IColumnMetadata this[string columnName]
{
    get;
}

Usage Example

// 1. Create an empty data set and a table
IDataSet dataSet = DataSetFactory.CreateDataSet();
IDataTable employeeDataTable = dataSet.AddNewTable("Employee");
employeeDataTable.AddColumn("Id", DataTypeNames.INT32);
employeeDataTable.AddColumn("FirstName", DataTypeNames.STRING);
employeeDataTable.AddColumn("LastName", DataTypeNames.STRING);

// 2. Retrieve column metadata
IColumnMetadata firstNameColumnMetadata = employeeDataTable["FirstName"];

 

Table of Content POCO DataSet API References POCO DataSet Types DataTable Members

 

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Business Process Programming in .Net
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