Converting Gregorian Date To Hijri (Islamic) Date

Sometimes We need to convert the Gregorian Date to Islamic Date. We can do this by CultureInfo class of Globalization

Step 1: The markup

Enter Gregorian Date: <asp:TextBox ID="txtDate" runat="server"></asp:TextBox>
    <br />  
        <asp:Button ID="btnCheck" runat="server" Text="Check"
            onclick="btnCheck_Click" />
            <br />           
    <asp:label ID="lblDate" runat="server" text=""></asp:label>

Step 2: Write the Following Code on Button Click event.

using System.Globalization;
protected void btnCheck_Click(object sender, EventArgs e)
    {      
        CultureInfo arSA = CultureInfo.CreateSpecificCulture("ar-SA");
        string[] arrDt = txtDate.Text.Split('/');
        int dd = Convert.ToInt32(arrDt[0]);
        int mm = Convert.ToInt32(arrDt[1]);
        int yy=Convert.ToInt32(arrDt[2]);
        DateTime dt = new DateTime(yy,mm,dd);
        string s = dt.ToString("dd/MM/yyyy", arSA);
        lblDate.Text = "The Hijri Date is " + s;
    }

Output: