public class User
    {       
        public Int64 UserId { get; set; }       
        public String UserName { get; set; }
     }        

 public interface IUserService
    {        
        int GetCustomerCount();
        List<User> GetCustomers(int StartIndex, int PageSize);
    }

public class ImplUserService : IUserService
    {
        IUnitOfWork _uow;
        IDbSet<User> _user;

        public ImplUserService(IUnitOfWork uow)
        {
            _uow = uow;
            _user = uow.Set<User>();
        }

        public int GetCustomerCount()
        {
            int totalCount = _user.ToList().Count;             
            return totalCount;
        }

        public List<User> GetCustomers(int StartIndex, int PageSize)
        {
            return _user.OrderBy(i => i.UserId).Skip(StartIndex).Take(PageSize).ToList();
        }
  }

<asp:ListView ID="ListView1" runat="server" DataSourceID="ObjectDataSource1">
            <ItemTemplate>
                <tr style="background-color: #DCDCDC; color: #000000;">
                    <td>
                        <asp:Label ID="UserIdLabel" runat="server" Text='<%# Eval("UserId") %>' />
                    </td>
                    <td>
                        <asp:Label ID="UserNameLabel" runat="server" Text='<%# Eval("UserName") %>' />
                    </td>
                </tr>
            </ItemTemplate>
            
            
            <LayoutTemplate>
                <table runat="server">
                    <tr runat="server">
                        <td runat="server">
                            <table id="itemPlaceholderContainer" runat="server" border="1" style="background-color: #FFFFFF;
                                border-collapse: collapse; border-color: #999999; border-style: none; border-width: 1px;">
                                <tr runat="server" style="background-color: #DCDCDC; color: #000000;">
                                    <th runat="server">
                                        UserId
                                    </th>
                                    <th runat="server">
                                        UserName
                                    </th>
                                </tr>
                                <tr id="itemPlaceholder" runat="server">
                                </tr>
                            </table>
                        </td>
                    </tr>
                    <tr runat="server">
                        <td runat="server" style="text-align: center; background-color: #CCCCCC;
                            color: #000000;">
                            <asp:DataPager ID="DataPager1" runat="server" PageSize="2">
                                <Fields>
                                    <asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True" ShowNextPageButton="False"
                                        ShowPreviousPageButton="False" />
                                    <asp:NumericPagerField />
                                    <asp:NextPreviousPagerField ButtonType="Button" ShowLastPageButton="True" ShowNextPageButton="False"
                                        ShowPreviousPageButton="False" />
                                </Fields>
                            </asp:DataPager>
                        </td>
                    </tr>
                </table>
            </LayoutTemplate>                        
        </asp:ListView>

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" EnablePaging="True" SelectCountMethod="GetCustomerCount"
            SelectMethod="GetCustomers" TypeName="UserService.ImplUserService" EnableViewState="False"
            MaximumRowsParameterName="PageSize" StartRowIndexParameterName="StartIndex">

protected void ObjectDataSource1_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
        {            
            e.ObjectInstance = ObjectFactory.GetInstance<IUserService>();            
        }

 pm.globals.set("uuid", "foo");

{
"name": "Vahid",
"id": "{{uuid}}"
}

    "json": {
        "id": "foo",
        "name": "Vahid"
    },

{
    "uuid": "4594e7ad-cae3-487b-bd42-fc49c312c0e9"
}

let jsonResponse = pm.response.json();
pm.globals.set("uuid", jsonResponse.uuid);

{
    "uuid": "83d437a8-bce6-438b-8693-068e5399182c"
}

   "json": {
        "id": "83d437a8-bce6-438b-8693-068e5399182c",
        "name": "Vahid"
    },

pm.test("Status code is 200", function () {
    pm.response.to.have.status(200);
});

using System;
using System.Data.SqlTypes;
using Microsoft.SqlServer.Server;

[Serializable()]
[SqlUserDefinedType(Format.Native)]
public struct JalaliDate : INullable
{
    private Int16 m_Year;
    private byte m_Month;
    private byte m_Day;
    private byte m_Hour;
    private byte m_Minute;
    private byte m_Second;
    private bool is_Null;


    public Int16 Year
    {
        get
        {
            return (this.m_Year);
        }
        set
        {
            m_Year = value;
        }
    }

    public byte Month
    {
        get
        {
            return (this.m_Month);
        }
        set
        {
            m_Month = value;
        }
    }

    public byte Day
    {
        get
        {
            return (this.m_Day);
        }
        set
        {
            m_Day = value;
        }
    }

    public byte Hour
    {
        get
        {
            return (this.m_Hour);
        }
        set
        {
            m_Hour = value;
        }
    }

    public byte Minute
    {
        get
        {
            return (this.m_Minute);
        }
        set
        {
            m_Minute = value;
        }
    }

    public byte Second
    {
        get
        {
            return (this.m_Second);
        }
        set
        {
            m_Second = value;
        }
    }

    public bool IsNull
    {
        get
        {
            return is_Null;
        }
    }

    public static JalaliDate Null
    {
        get
        {
            JalaliDate jl = new JalaliDate();
            jl.is_Null = true;
            return (jl);
        }
    }


    public override string ToString()
    {
        if (this.IsNull)
        {
            return "NULL";
        }
        else
        {
            return this.m_Year.ToString("D4") + "/" + this.m_Month.ToString("D2") + "/" + this.m_Day.ToString("D2") + " " + this.Hour.ToString("D2") + ":" + this.Minute.ToString("D2") + ":" + this.Second.ToString("D2");
        }
    }


    public static JalaliDate Parse(SqlString s)
    {
        if (s.IsNull)
        {
            return Null;
        }

        System.Globalization.PersianCalendar pers = new System.Globalization.PersianCalendar();
        string str = Convert.ToString(s);
        string[] JDate = str.Split(' ')[0].Split('/');

        JalaliDate jl = new JalaliDate();

        jl.Year = Convert.ToInt16(JDate[0]);
        byte MonthsInYear = (byte)pers.GetMonthsInYear(jl.Year);
        jl.Month = (byte.Parse(JDate[1]) <= MonthsInYear ? (byte.Parse(JDate[1]) > 0 ? byte.Parse(JDate[1]) : (byte)1) : MonthsInYear);
        byte DaysInMonth = (byte)pers.GetDaysInMonth(jl.Year, jl.Month); ;
        jl.Day = (byte.Parse(JDate[2]) <= DaysInMonth ? (byte.Parse(JDate[2]) > 0 ? byte.Parse(JDate[2]) : (byte)1) : DaysInMonth);
        if (str.Split(' ').Length > 1)
        {
            string[] JTime = str.Split(' ')[1].Split(':');
            jl.Hour = (JTime.Length >= 1 ? (byte.Parse(JTime[0]) < 23 && byte.Parse(JTime[0]) >= (byte)0 ? byte.Parse(JTime[0]) : (byte)0) : (byte)0);
            jl.Minute = (JTime.Length >= 2 ? (byte.Parse(JTime[1]) < 59 && byte.Parse(JTime[1]) >= (byte)0 ? byte.Parse(JTime[1]) : (byte)0) : (byte)0);
            jl.Second = (JTime.Length >= 3 ? (byte.Parse(JTime[2]) < 59 && byte.Parse(JTime[2]) >= (byte)0 ? byte.Parse(JTime[2]) : (byte)0) : (byte)0);
        }
        else { jl.Hour = 0; jl.Minute = 0; jl.Second = 0; }

        return (jl);
    }

    public SqlString GetDate()
    {
        return this.m_Year.ToString("D4") + "/" + this.m_Month.ToString("D2") + "/" + this.m_Day.ToString("D2");
    }

    public SqlString GetTime()
    {
        return this.Hour.ToString("D2") + ":" + this.Minute.ToString("D2") + ":" + this.Second.ToString("D2");
    }

    public SqlDateTime ToGregorianTime()
    {
        System.Globalization.PersianCalendar pers = new System.Globalization.PersianCalendar();
        return SqlDateTime.Parse(pers.ToDateTime(this.Year, this.Month, this.Day, this.Hour, this.Minute, this.Second, 0).ToString());
    }

    public SqlString JalaliDateAdd(SqlString interval, int increment)
    {
        System.Globalization.PersianCalendar pers = new System.Globalization.PersianCalendar();
        DateTime dt = pers.ToDateTime(this.Year, this.Month, this.Day, this.Hour, this.Minute, this.Second, 0);
        string CInterval = interval.ToString();
        bool isConvert = true;
        switch (CInterval)
        {
            case "Year":
                dt = pers.AddYears(dt, increment);
                break;
            case "Month":
                dt = pers.AddMonths(dt, increment);
                break;
            case "Day":
                dt = pers.AddDays(dt, increment);
                break;
            case "Hour":
                dt = pers.AddHours(dt, increment);
                break;
            case "Minute":
                dt = pers.AddMinutes(dt, increment);
                break;
            case "Second":
                dt = pers.AddSeconds(dt, increment);
                break;
            default:
                isConvert = false;
                break;
        }

        if (isConvert == true)
        {
            this.Year = (Int16)pers.GetYear(dt);
            this.Month = (byte)pers.GetMonth(dt);
            this.Day = (byte)pers.GetDayOfMonth(dt);
            this.Hour = (byte)pers.GetHour(dt);
            this.Minute = (byte)pers.GetMinute(dt);
            this.Second = (byte)pers.GetSecond(dt);
        }


        return this.m_Year.ToString("D4") + "/" + this.m_Month.ToString("D2") + "/" + this.m_Day.ToString("D2") + " " + this.Hour.ToString("D2") + ":" + this.Minute.ToString("D2") + ":" + this.Second.ToString("D2");
    }
}

USE Northwind

GO

CREATE TABLE dbo.TestTable
(
Id int NOT NULL IDENTITY (1, 1),
TestDate dbo.JalaliDate NULL
)  ON [PRIMARY]
GO

Insert into TestTable (TestDate) Values ('1392/02/09'),('1392/02/09 22:40'),('1392/12/30 22:40')

sp_configure 'clr enabled', 1
Reconfigure

Insert into TestTable (TestDate) Values ('1392/02/09'),('1392/02/09 22:40'),('1392/12/30 22:40')

Declare @a JalaliDate  = '1392/02/07 00:00:00'
Declare @b JalaliDate = '1392/02/05 00:00:00'

SELECT DATEDIFF("DAY",@b.ToGregorianTime(),@a.ToGregorianTime()) AS DiffDate

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