Bineethavinod's Weblog

generating alpha numeric password using stored procedure

bineethavinod — Mon, 23 Jun 2008 05:32:04 +0000

 
CREATE PROC random_password
(
@len int = 8, --Length of the password to be generated
@password_type char(7) = 'simple' 
--Default is to generate a simple password with lowecase letters. 
--Pass anything other than 'simple' to generate a complex password. 
--The complex password includes numbers, special characters, upper case and lower case letters
)
AS
/*************************************************************************************************
               Copyright © 2001 Narayana Vyas Kondreddi. All rights reserved.
                                          
Purpose:       To generate a random password
 
Written by:    Narayana Vyas Kondreddi
               http://vyaskn.tripod.com
 
Tested on:     SQL Server 7.0 and SQL Server 2000
 
Date modified: March-29-2001 01:15 PM
 
Email:         vyaskn@hotmail.com
 
Examples:
 
To generate a simple password with a length of 8 characters:
EXEC random_password
 
To generate a simple password with 6 characters:
EXEC random_password 6
 
To generate a complex password with 8 characters:
EXEC random_password @Password_type = 'complex'
 
To generate a comples password with 6 characters:
EXEC random_password 6, 'complex'
*************************************************************************************************/
BEGIN
DECLARE @password varchar(25), @type tinyint, @bitmap char(6)
SET @password='' 
SET @bitmap = 'uaeioy' 
--@bitmap contains all the vowels, which are a, e, i, o, u and y. These vowels are used to generate slightly readable/rememberable simple passwords
 
WHILE @len > 0
BEGIN
        IF @password_type = 'simple' --Generating a simple password
        BEGIN
        IF (@len%2) = 0  --Appending a random vowel to @password
               
               SET @password = @password + SUBSTRING(@bitmap,CONVERT(int,ROUND(1 + (RAND() * (5)),0)),1)
        ELSE --Appending a random alphabet
               SET @password = @password + CHAR(ROUND(97 + (RAND() * (25)),0))
               
        END
        ELSE --Generating a complex password
        BEGIN
               SET @type = ROUND(1 + (RAND() * (3)),0)
 
               IF @type = 1 --Appending a random lower case alphabet to @password
                       SET @password = @password + CHAR(ROUND(97 + (RAND() * (25)),0))
               ELSE IF @type = 2 --Appending a random upper case alphabet to @password
                       SET @password = @password + CHAR(ROUND(65 + (RAND() * (25)),0))
               ELSE IF @type = 3 --Appending a random number between 0 and 9 to @password
                       SET @password = @password + CHAR(ROUND(48 + (RAND() * (9)),0))
               ELSE IF @type = 4 --Appending a random special character to @password
                       SET @password = @password + CHAR(ROUND(33 + (RAND() * (13)),0))
        END
 
        SET @len = @len - 1
END
 
SELECT @password --Here's the result
 
END

stored procedure for creating a random password in sql

bineethavinod — Mon, 23 Jun 2008 05:28:28 +0000

CREATE PROC random_password
(
@len int = 8, --Length of the password to be generated
@password_type char(7) = 'simple' 
--Default is to generate a simple password with lowecase letters. 
--Pass anything other than 'simple' to generate a complex password. 
--The complex password includes numbers, special characters, upper case and lower case letters
)
AS

How many users are using a site at a same time?

bineethavinod — Mon, 23 Jun 2008 05:13:27 +0000

When a site runs then how we can find that in a single time, how many users are using the site? In this article I am going to show how we can trap that how many users are hitting the site.

For this I used Global.asax. In Global.asax we find many method such as

Application_Start, Application_End, Session_Start, Session_End etc.

I used here Application_Start and Session_Start method.

In Application_Start method I declare a varaible of Aplication Type like as:

void Application_Start(object sender, EventArgs e)

{

Application["User"] = 0;

}

After declaring it, I used Session_Start Method like as:

void Session_Start(object sender, EventArgs e)

{

int count;

count = (int)Application["User"];

count = count + 1;

Application["User"]=count;

}

In this Session_Start method I declare a variable of integer type. I type cast the Application["User"] with int to store the value of Application["User"] in variable count. On running application a new session create. So when new session will create then this Session_start method will call. On every call the value of variable count will increase by 1. With this we can trap the total no. of users, which are hitting the site at a same time.

The number of total users will come on form. For this I do the code on Page_Load like as:

protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Application["User"].ToString());
}

ajax tuitorials

bineethavinod — Wed, 28 Nov 2007 08:45:26 +0000

http://www.asp.net/AJAX/Documentation/Live/tutorials

retrieving password using forgot password control

bineethavinod — Wed, 28 Nov 2007 05:34:16 +0000

in the web config we have to write

<system.net><mailSettings><smtp deliveryMethod=“Network“ from=“bineetha@sprint.co.in“ ><network host=“192.168.1.83“ defaultCredentials=“true“ port=“25“/>smtp>and inside the control

<asp:PasswordRecovery ID=”PasswordRecovery1″ runat=”server”> <MailDefinition IsBodyHtml=”True” Priority=”High” Subject=”Your password” BodyFileName=”~/HtmlBody.txt”>in the html.txt file we have to specify the model of email to be received

MailDefinition><InstructionTextStyle Font-Italic=”True” ForeColor=”Black” />

<TitleTextStyle BackColor=”#5D7B9D” Font-Bold=”True” Font-Size=”0.9em” ForeColor=”White” /><SubmitButtonStyle BackColor=”#FFFBFF” BorderColor=”#CCCCCC” BorderStyle=”Solid” BorderWidth=”1px”

Font-Names=”Verdana” Font-Size=”0.8em” ForeColor=”#284775″ /> asp:PasswordRecovery>mailSettings>system.net>

common errors

bineethavinod — Tue, 27 Nov 2007 10:50:43 +0000

“Invalid postback or callback argument.

Event validation is enabled using in configuration or

<%@ Page EnableEventValidation=”true” %> in a page.

For security purposes, this feature verifies that arguments to postback or callback events

originate from the server control that originally rendered them. If the data is valid

and expected, use the ClientScriptManager.RegisterForEventValidation method in order to

# re: EnableEventValidation error on button postback using a multipart form in .NET v2.0 I had a similiar problem. I fixed it by putting my databinding code in the Page_Load event in a !Page.IsPostBack block. I got the solution here:

2]Invalid attempt to read when no data is present
answer
——–

reader obj should use as shown below

sqlReader = sqlCmd.ExecuteReader();
sqlReader.Read();

txtBkNum_brw.Text = sqlReader["BookNumber"].ToString();
txtBookTtl_brw.Text = sqlReader["BookTitle"].ToString();
txtAuth_brw.Text = sqlReader["Author"].ToString();
comboBox1.Text = sqlReader["Category"].ToString();

sqlReader.Close();

uploading an image

bineethavinod — Tue, 27 Nov 2007 10:47:11 +0000

using file upload control we can do that

after that we should save the filename of the image in our database

string imagestring = Path.GetFileName(fileimg.PostedFile.FileName);for this we have to import a namespace

using System.IO;string a = Path.GetFileName(photofile.PostedFile.FileName);

            if (a != “”)
            {
                string filetype = photofile.PostedFile.ContentType;
                int filelength = photofile.PostedFile.ContentLength;
               // Response.Write(filelength.ToString());
                if (filelength <= 1048567)
                {
                    if (filetype == “image/pjpeg” || filetype == “image/jpg” || filetype == “image/gif”)
                    {
                        photofile.PostedFile.SaveAs(Server.MapPath(“.”).ToString() + @”\image\” + a);

}

binding data in a drpdown

bineethavinod — Tue, 27 Nov 2007 10:31:00 +0000

SqlCommand cmd1 = new SqlCommand(selstr1, Con()); SqlDataAdapter ada = new SqlDataAdapter(cmd1); DataSet ds = new DataSet();ada.Fill(ds);

ddlProductCategory.DataSource = ds.Tables[0];

ddlProductCategory.DataTextField = “CategoryName”;ddlProductCategory.DataValueField = “CategoryId”;ddlProductCategory.DataBind();

maintaing a cart

bineethavinod — Tue, 27 Nov 2007 10:26:42 +0000

we have to make a datatable like this

public object makeCart(){

objDT = new System.Data.DataTable(“Cart”);objDT.Columns.Add(“ID”, typeof(int));objDT.Columns[

"ID"].AutoIncrement = true;objDT.Columns["ID"].AutoIncrementSeed = 1;objDT.Columns.Add(

“Quantity”, typeof(int));objDT.Columns.Add(“Product”, typeof(string));objDT.Columns.Add(

“Cost”, typeof(decimal));return objDT;}

in the page load

if (Session["Cart"]==null){

Session["Cart"] = makeCart();}

then in the add to cart button click

protected void btnAddtocart_Click(object sender, EventArgs e){

objDT = (DataTable)Session["Cart"];object Product = lblName.Text;

bool blnMatch = false; foreach (DataRow objDR in objDT.Rows){

if (objDR["Product"].Equals(Product)){

objDR["Quantity"] = (object)(Convert.ToInt32(objDR["Quantity"]) + Convert.ToInt32(txtQty.Text));blnMatch = true;

break;}

}

if (!blnMatch){

objDR = objDT.NewRow();

objDR["Quantity"] = Int32.Parse(txtQty.Text);objDR["Product"] = lblName.Text;objDR[

"Cost"] = decimal.Parse(lblPrice.Text);objDT.Rows.Add(objDR);

}

Session["Cart"] = objDT;Response.Redirect(“viewcart.aspx”);}

then in the view cart page

protected void Page_Load(object sender, EventArgs e){

if (!IsPostBack){

cart = (DataTable)Session["Cart"];girdCart.DataSource = cart;

girdCart.DataBind();

if (Session["Cart"] != null){

total = GetItemTotal();

lblDispalyTot.Text = “Total: $” + total.ToString();}

}

protected void btnContunueShopping_Click(object sender, EventArgs e){

Response.Redirect(“Home.aspx”);}

protected void girdCart_RowDeleting(object sender, GridViewDeleteEventArgs e){

cart = (DataTable)Session["Cart"];cart.Rows[e.RowIndex].Delete();

girdCart.DataSource = cart;

girdCart.DataBind();

total = GetItemTotal();

lblDispalyTot.Text = “Total: $” + total.ToString();if (cart.Rows.Count == 0){

btnEmptyCart_Click(sender,e);

}

public decimal GetItemTotal(){

for (intCounter = 0; intCounter <= cart.Rows.Count – 1; intCounter++){

objDR = cart.Rows[intCounter];

decRunningTotals += (decimal)(Convert.ToInt32(objDR["Cost"]) * Convert.ToInt32(objDR["Quantity"]));}

return decRunningTotals;}

protected void btnCheckout_Click(object sender, EventArgs e){

Response.Redirect(“~/SignIn.aspx”);}

protected void girdCart_RowUpdating(object sender, GridViewUpdateEventArgs e){

string quantity;cart = (DataTable)Session["Cart"];objDR = cart.Rows[e.RowIndex];

quantity = ((TextBox)girdCart.Rows[e.RowIndex].Cells[1].FindControl(“txtqty”)).Text;objDR[

"Quantity"] = Convert.ToInt32(quantity);girdCart.DataSource = cart;

girdCart.DataBind();

total = GetItemTotal();

lblDispalyTot.Text = “Total: $” + total.ToString();}

protected void btnEmptyCart_Click(object sender, EventArgs e){

Session["Cart"] = null;cart =(DataTable) Session["Cart"];girdCart.DataSource = cart;

girdCart.DataBind();

lblDispalyTot.Text = ” “;lblCart.Text = “Your Cart is empty now”;}

customised forms authentication

bineethavinod — Tue, 27 Nov 2007 10:11:43 +0000

in customised forms authentication we can use our database and with login controls

the webconfig settings for that is given below

<connectionStrings><add name=“dbstring“ connectionString=“Data Source=AST020\sqlexpress;Initial Catalog=simpleshoppingcart;uid=sa;pwd=assyst;“/>connectionStrings><system.web><

membership defaultProvider=“CustomizedProvider“><providers><add connectionStringName=“dbstring“ applicationName=“simpleshoppingcart“ minRequiredPasswordLength=“5“ minRequiredNonalphanumericCharacters=“0“ name=“CustomizedProvider“ type=“Membership“/>providers>

membership><roleManager enabled=“true“ defaultProvider=“CustomizedRoleProvider“><providers><add name=“CustomizedRoleProvider“ type=“role“ connectionStringName=“dbstring“/>

providers>roleManager><authentication mode=“Forms“><forms loginUrl=“SignIn.aspx“ defaultUrl=“SignIn.aspx“ name=“RoleBasedFormAuthentication.ASPXAUTH“/>

authentication><authorization>< allow users=“?“/>authorization>after that we can restrict the memberes according to their roles

<authentication mode=“Forms“><forms loginUrl=“default.aspx“ defaultUrl=“default.aspx“ name=“.ASPX_AUTH_COOKIE“/>authentication><authorization><

deny users=“?“/>authorization><location path=“Admin“><system.web><

authorization><deny roles=“manager“/><deny roles=“SWE“/><allow roles=“Admin“/>

authorization>system.web>location><location path=“SWE“><

system.web><authorization><allow roles=“manager“/><allow roles=“SWE“/><

allow roles=“Admin“/>authorization>system.web>location><

location path=“manager“><system.web><authorization><allow roles=“manager“/><

deny roles=“SWE“/><deny roles=“Admin“/>authorization>system.web>

location>configuration>we cam implement and use membership provider class

roleprovider class