IModelGetter Interface

.NET Standard 2.x

Represents the value getter of a model object. Used in conjunction with the grouping function of the DataStore.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Syntax

  public interface IModelGetter;

Properties

Name	Return Type	Description
RowId	int	Gets the ID of the row in the DataStore corresponding to the model object.
Value	object	The value of the model object. You can convert it to a TModel.

Methods

Name	Return Type	Description
GetItem(short column, bool isOriginalValue = false)	object	Gets the value of the specified column (by column number).
GetItem(string column, bool isOriginalValue = false)	object	Gets the value of the specified column (by column name).
GetItem<TValue>(short column, bool isOriginalValue = false)	TValue	Gets the value of the specified column (by column number) and converts this value to the specified data type.
GetItem<TValue>(string column, bool isOriginalValue = false)	TValue	Gets the value of the specified column (by column name) and converts this value to the specified data type.
GetItemBoolean(short column, bool isOriginalValue = false)	bool?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.Boolean> data type.
GetItemBoolean(string column, bool isOriginalValue = false)	bool?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.Boolean> data type.
GetItemDate(short column, bool isOriginalValue = false)	DateTime?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.DateTime> data type.
GetItemDate(string column, bool isOriginalValue = false)	DateTime?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.DateTime> data type.
GetItemDateTime(short column, bool isOriginalValue = false)	DateTime?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.DateTime> data type.
GetItemDateTime(string column, bool isOriginalValue = false)	DateTime?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.DateTime> data type.
GetItemDecimal(short column, bool isOriginalValue = false)	decimal?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.Decimal> data type.
GetItemDecimal(string column, bool isOriginalValue = false)	decimal?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.Decimal> data type.
GetItemNumber(short column, bool isOriginalValue = false)	double?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.Double> data type.
GetItemNumber(string column, bool isOriginalValue = false)	double?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.Double> data type.
GetItemString(short column, bool isOriginalValue = false)	string	Gets the value of the specified column (by column number) and converts this value to the System.String data type.
GetItemString(string column, bool isOriginalValue = false)	string	Gets the value of the specified column (by column name) and converts this value to the System.String data type.
GetItemTime(short column, bool isOriginalValue = false)	TimeSpan?	Gets the value of the specified column (by column number) and converts this value to the System.Nullable<System.TimeSpan> data type.
GetItemTime(string column, bool isOriginalValue = false)	TimeSpan?	Gets the value of the specified column (by column name) and converts this value to the System.Nullable<System.TimeSpan> data type.

Examples

The following code example creates an instance of ModelGetter.

using DWNet.Data;
using System;

namespace Appeon.ApiDoc.IModelGetterExamples
{
    public class IModelGetterExample
    {
        private readonly SchoolContext _context;

        public IModelGetterExample(SchoolContext context)
        {
            _context = context;
        }

        public void Example()
        {
            // Creates a datastore object
            IDataStore course = new DataStore("d_department_course", _context);

            course.Retrieve();

            var departmentGroup = course.GroupBy(1, null);

            // Gets the grouped data
            foreach (var m in departmentGroup)
            {
                Console.WriteLine("Group Key = {0}", m.Key);
                // Shows the data in each group in a loop
                foreach (IModelGetter getter in m)
                {
                    Console.WriteLine("Course Name = {0}" , getter.GetItemString(1));
                }
            }

            /*This code produces the following output:
            
            Group Key = 1
            Course Name = Chemistry
            Course Name = Chemistry
            Course Name = Chemistry
            Course Name = Physics
            Course Name = Physics
            Course Name = Physics
            Course Name = Physics
            Course Name = Physics
            Course Name = Physics
            Course Name = Physics
            Group Key = 2
            Course Name = Composition
            Course Name = Composition
            Course Name = Composition
            Course Name = Composition
            Course Name = Composition
            Course Name = Poetry
            Course Name = Poetry
            Course Name = Literature
            Course Name = Literature
            Course Name = Literature
            */
        }
    }
}

Example Refer To

Model Class: D_Department_Course
DataWindow File: d_department_course