referesh and encrypt

CH78/Display.aspx.cs

@@ -14,30 +14,32 @@ namespace CH78
             string studentID = "";
             string gender;
 
+            string id = StudentDataTier.DecryptQueryString(Request.QueryString["ID"], "CNSAcnsa1", "salty");
+
             if (!IsPostBack)
             {
                 pageType = Request.QueryString["type"].Trim().ToUpper();
                 
                 // retrieve the querystring
-                if (String.IsNullOrEmpty(Request.QueryString["ID"]))
+                if (String.IsNullOrEmpty(id))
                 {
                     // not the right entry point
                     Response.Redirect("Home.aspx");
                 }
 
-                else if (Request.QueryString["ID"].Trim().ToUpper() == "NEW")
+                else if (id.ToUpper() == "NEW")
                 {
                    BindDDL();
                 }
 
                 else if (Request.QueryString["type"].Trim().ToUpper() == "VIEW") // display
                 {
-                    GetStudent(Request.QueryString["ID"].Trim(), Request.QueryString["type"].Trim().ToUpper());
+                    GetStudent(id, Request.QueryString["type"].Trim().ToUpper());
                 }
 
                 else if (Request.QueryString["type"].Trim().ToUpper() == "EDIT") // edit
                 {
-                    GetStudent(Request.QueryString["ID"].Trim(), Request.QueryString["type"].Trim().ToUpper());
+                    GetStudent(id, Request.QueryString["type"].Trim().ToUpper());
                 }
 
                 else // anything else
@@ -138,7 +140,21 @@ namespace CH78
         
         protected void btnCancelStu_OnClick(object sender, EventArgs e)
         {
-            
+            System.Text.StringBuilder cb = new System.Text.StringBuilder();
+                        cb.Append(" opener.location.href = 'home.aspx';");
+                        cb.Append("var ie7 = (document.all && !window.opera && window.XMLHttpRequest) ? true : false;");
+                        cb.Append(" if (ie7)");
+                        cb.Append(" { ");
+                        cb.Append("window.open('','_parent','');");
+                        cb.Append("window.close();");
+                        cb.Append(" }");
+                        cb.Append(" else ");
+                        cb.Append(" { ");
+                        cb.Append(" this.focus();");
+                        cb.Append(" self.opener = this;");
+                        cb.Append(" self.close();");
+                        cb.Append(" }");
+                        ClientScript.RegisterClientScriptBlock(this.GetType(), "CloseReloadScript", cb.ToString(), true);
         }
 
         protected void btnGoStu_OnClick(object sender, EventArgs e)
@@ -148,36 +164,97 @@ namespace CH78
             {
             }
             else if (Request.QueryString["type"].Trim().ToUpper() == "EDIT")
-            {            StudentDataTier.UpdateStudents(0, 
+            {
+                Decimal acct_bal = 0;
+
+                try
+                {
+                    acct_bal = decimal.Parse(txtActBal.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+
+                Decimal creds = 0;
+
+                try
+                {
+                    creds = decimal.Parse(txtCreds.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+
+                DateTime date = new DateTime(3000, 1, 1);
+                try
+                {
+                    date = DateTime.Parse(txtDOB.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+
+                StudentDataTier.UpdateStudents(0,
                     txtStuID.Text,
                     txtFNAME.Text,
                     txtLNAME.Text,
                     txtMidInit.Text,
-                DateTime.Parse(txtDOB.Text), 
+                    date,
                     txtGender.Text,
-                decimal.Parse(txtActBal.Text),
+                    acct_bal,
                 txtMajor.Text, txtCellPhone.Text,
                 txtAdr1.Text, 
                 txtCity.Text, 
                 txtState.ToString(),
                 txtZip.Text, 
-                decimal.Parse(txtCreds.Text));
+                creds);
             }
             else if (Request.QueryString["type"].Trim().ToUpper() == "NEW")
-            {            StudentDataTier.UpdateStudents(1, 
+            { 
+                Decimal acct_bal = 0;
+
+                try
+                {
+                    acct_bal = decimal.Parse(txtActBal.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+
+                Decimal creds = 0;
+
+                try
+                {
+                    creds = decimal.Parse(txtCreds.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+
+                DateTime date = new DateTime(3000, 1, 1);
+                try
+                {
+                    date = DateTime.Parse(txtDOB.Text);
+                }
+                catch (Exception exception)
+                {
+                }
+                
+                
+                StudentDataTier.UpdateStudents(1, 
                 txtStuID.Text, 
                 txtFNAME.Text, 
                 txtLNAME.Text,
                 txtMidInit.Text,
-                DateTime.Parse(txtDOB.Text), 
+                date, 
                 txtGender.Text.ToString(),
-                decimal.Parse(txtActBal.Text),
+                acct_bal,
                 txtMajor.Text, txtCellPhone.Text,
                 txtAdr1.Text, 
                 txtCity.Text, 
                 txtState.Text.ToString(),
                 txtZip.Text, 
-                decimal.Parse(txtCreds.Text));
+                creds);
             }
             
 

CH78/Home.aspx.cs

@@ -20,6 +20,15 @@ namespace CH78
             if (!IsPostBack)
             {
 
+                Cache.Remove("StudentData");
+                BindData();
+            }
+            else
+            {
+                if (Convert.ToString(Session["GRIDREFRESH"]) != "")
+                {
+                    BindData();
+                }
             }
 
             
@@ -236,10 +245,12 @@ namespace CH78
                 // Get the record
                 recordToBeEdited = (e.CommandArgument.ToString().Trim());
 
+                recordToBeEdited = StudentDataTier.EncryptQueryString(recordToBeEdited, "CNSAcnsa1", "salty");
+
                 // this script will open a popup
                 sb.Append("<script language='javascript'>");
                 sb.Append("window.open('Display.aspx?ID=" + recordToBeEdited.ToString() + "&type=Edit" +"' , 'DisplayEdit',");
-                sb.Append("'width=1525, height=525, menubar=no, resizable=yes, left=50, top=50, scrollbars=yes');");
+                sb.Append("'width=1025, height=525, menubar=no, resizable=yes, left=50, top=50, scrollbars=yes');");
                 sb.Append("</script>");
 
                 // register with ClientScript
@@ -267,7 +278,7 @@ namespace CH78
                 // this script will open a popup
                 sb.Append("<script language='javascript'>");
                 sb.Append("window.open('Display.aspx?ID=NEW&type=NEW' , 'DisplayEdit',");
-                sb.Append("'width=1525, height=525, menubar=no, resizable=yes, left=50, top=50, scrollbars=yes');");
+                sb.Append("'width=1025, height=525, menubar=no, resizable=yes, left=50, top=50, scrollbars=yes');");
                 sb.Append("</script>");
 
                 // register with ClientScript

CH78/StudentDataTier.cs

@@ -3,6 +3,11 @@ using System.Data;
 using System.Data.SqlClient;
 using System.Configuration;
 using System.Web.UI.WebControls;
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+using System.Web;
 
 namespace CH78
 {
@@ -24,6 +29,55 @@ namespace CH78
             
         }
         
+        public static string EncryptQueryString(string inputText, string key, string salt)
+{
+    byte[] plainText = Encoding.UTF8.GetBytes(inputText);
+
+    using (RijndaelManaged rijndaelCipher = new RijndaelManaged())
+    {
+        PasswordDeriveBytes secretKey = new PasswordDeriveBytes(Encoding.ASCII.GetBytes(key), Encoding.ASCII.GetBytes(salt));
+        using (ICryptoTransform encryptor = rijndaelCipher.CreateEncryptor(secretKey.GetBytes(32), secretKey.GetBytes(16)))
+        {
+            using (MemoryStream memoryStream = new MemoryStream())
+            {
+                using (CryptoStream cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
+                {
+                    cryptoStream.Write(plainText, 0, plainText.Length);
+                    cryptoStream.FlushFinalBlock();
+                    string base64 = Convert.ToBase64String(memoryStream.ToArray());
+
+                    // Generate a string that won't get screwed up when passed as a query string.
+                    string urlEncoded = HttpUtility.UrlEncode(base64);
+                    return urlEncoded;
+                }
+            }
+        }
+    }
+}
+
+public static string DecryptQueryString(string inputText, string key, string salt)
+        {
+            byte[] encryptedData = Convert.FromBase64String(inputText);
+            PasswordDeriveBytes secretKey = new PasswordDeriveBytes(Encoding.ASCII.GetBytes(key), Encoding.ASCII.GetBytes(salt));
+
+            using (RijndaelManaged rijndaelCipher = new RijndaelManaged())
+            {
+                using (ICryptoTransform decryptor = rijndaelCipher.CreateDecryptor(secretKey.GetBytes(32), secretKey.GetBytes(16)))
+                {
+                    using (MemoryStream memoryStream = new MemoryStream(encryptedData))
+                    {
+                        using (CryptoStream cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
+                        {
+                            byte[] plainText = new byte[encryptedData.Length];
+                            cryptoStream.Read(plainText, 0, plainText.Length);
+                            string utf8 = Encoding.UTF8.GetString(plainText);
+                            return utf8;
+                        }
+                    }
+                }
+            }
+        }
+        
         public DataSet GetStudents()
         {