Aspdotnet.Sunil Kumar

Thursday, August 07, 2014

Custom Validator For Email And Mobile Number in Asp.net

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<table>

<tr>

<td >

Email</td>

<td>

<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>

<asp:CustomValidator ID="CustomValidator1" runat="server"

ControlToValidate="TextBox3" ErrorMessage="Enter Valid Email" Font-Bold="True"

ForeColor="Red" onservervalidate="Validate_Email"></asp:CustomValidator>

</td>

</tr>

<tr>

<td>

Mobile</td>

<td>

<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>

<asp:CustomValidator ID="CustomValidator2" runat="server"

ControlToValidate="TextBox4" Display="Dynamic"

ErrorMessage="Enter Valid mobile " ForeColor="Red"

onservervalidate="Validate_Mobile"></asp:CustomValidator>

</td>

</tr>

<tr>

<td >

<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Save" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Text.RegularExpressions;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Validate_Email(object source, ServerValidateEventArgs e)

{

//System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex("^[0-9]+$");

System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");

e.IsValid = r.IsMatch(TextBox3.Text);

}

protected void Validate_Mobile(object source, ServerValidateEventArgs e)

{

System.Text.RegularExpressions.Regex r = new System.Text.RegularExpressions.Regex(@"^[987]+\d{9}$");

e.IsValid = r.IsMatch(TextBox4.Text);

}

protected void Button1_Click(object sender, EventArgs e)

{

}

Wednesday, August 06, 2014

How To Generate Random Password in Asp.net And C#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class Auto_Generate_password : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

public static string NewRandomPassword(int PasswordLength)

{

string _allowedChars = "0123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ";

Random randNum = new Random();

char[] chars = new char[PasswordLength];

int allowedCharCount = _allowedChars.Length;

for (int i = 0; i < PasswordLength; i++)

{

chars[i] = _allowedChars[(int)((_allowedChars.Length) * randNum.NextDouble())];

}

return new string(chars);

}

protected void Button1_Click(object sender, EventArgs e)

{

Label1.Text = NewRandomPassword(10);

}

Monday, August 04, 2014

How To Create your own captcha image generator in asp.net using c#.net

The below example will generate a captcha code with numbers and alphabets (small and capital letters). You can change the variable “combination” value according to your requirement.

Create two pages Captcha_image.aspx and Registration.aspx

Captcha_image.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Captcha_image.aspx.cs" Inherits="Captcha_image" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

</form>

</body>

</html>

Captcha_image.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Drawing.Imaging;

using System.Data.SqlClient;

using System.Text;

public partial class Captcha_image : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (Session["captcha"]!= null)

{

int height = 30;

int width = 100;

Bitmap bmp = new Bitmap(width, height);

RectangleF rectf = new RectangleF(10, 5, 0, 0);

Graphics g = Graphics.FromImage(bmp);

g.Clear(Color.White);

g.SmoothingMode = SmoothingMode.AntiAlias;

g.InterpolationMode = InterpolationMode.HighQualityBicubic;

g.PixelOffsetMode = PixelOffsetMode.HighQuality;

g.DrawString(Session["captcha"].ToString(), new Font("Thaoma", 12, FontStyle.Italic), Brushes.Green, rectf);

g.DrawRectangle(new Pen(Color.Red), 1, 1, width - 2, height - 2);

g.Flush();

Response.ContentType = "image/jpeg";

bmp.Save(Response.OutputStream, ImageFormat.Jpeg);

g.Dispose();

bmp.Dispose();

}

Registration.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Registration.aspx.cs" Inherits="Registration" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

<asp:ScriptManager ID="SM1" runat="server">

</asp:ScriptManager>

<table style="border: solid 1px black; padding: 20px; position: relative; top: 50px;"

align="center">

<tr>

<td>

Email ID :

</td>

<td>

<asp:TextBox ID="txtEmailID" runat="server" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

Password :

</td>

<td>

<asp:TextBox ID="txtPassword" runat="server" TextMode="Password" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

Confirm Password :

</td>

<td>

<asp:TextBox ID="txtConfirmPassword" runat="server" TextMode="Password" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

Enter Below Code :

</td>

<td>

<asp:TextBox ID="txtCaptcha" runat="server" Width="200px"></asp:TextBox>

</td>

</tr>

<tr>

<td>

</td>

<asp:UpdatePanel ID="UP1" runat="server">

<table>

<tr>

<asp:Image ID="imgCaptcha" runat="server" />

</td>

<asp:Button ID="btnRefresh" runat="server" Text="Refresh" OnClick="btnRefresh_Click" />

</td>

</tr>

</table>

</ContentTemplate>

</asp:UpdatePanel>

</td>

</tr>

<tr>

<asp:Button ID="btnRegiser" runat="server" Text="Register" OnClick="btnRegister_Click" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

Registration.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Drawing.Imaging;

using System.Data.SqlClient;

using System.Text;

public partial class Registration : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

FillCapctha();

}

void FillCapctha()

{

try

{

Random random = new Random();

string combination = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

StringBuilder captcha = new StringBuilder();

for (int i = 0; i < 6; i++)

captcha.Append(combination[random.Next(combination.Length)]);

Session["captcha"] = captcha.ToString();

imgCaptcha.ImageUrl = "Captcha_image.aspx?" + DateTime.Now.Ticks.ToString();

}

catch

{

throw;

}

protected void btnRegister_Click(object sender, EventArgs e)

{

if (Session["captcha"].ToString() != txtCaptcha.Text)

Response.Write("Invalid Captcha Code");

else

Response.Write("Valid Captcha Code");

FillCapctha();

}

protected void btnRefresh_Click(object sender, EventArgs e)

{

FillCapctha();

}

RESULT

Export GridView Data to Excel, Word, Pdf, Text and Csv Format and Print Using in Asp.Net

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

function PrintGridData() {

var prtGrid = document.getElementById('<%=gvDetails.ClientID %>');

var prtwin = window.open('', 'PrintGridView',

'left=100,top=100,width=400,height=400,tollbar=0,scrollbars=1,status=0,resizable=1');

prtwin.document.write(prtGrid.outerHTML);

prtwin.document.close();

prtwin.focus();

prtwin.print();

prtwin.close();

}

</script>

</head>

<body>

<div>

<table>

<tr>

<asp:GridView ID="gvDetails" runat="server" AutoGenerateColumns="false">

<asp:BoundField DataField="CustomerID" HeaderText="Employee Id" />

<asp:BoundField DataField="Name" HeaderText="Last Name" />

<asp:BoundField DataField="company" HeaderText="Company" />

</Columns>

</asp:GridView>

</td>

</tr>

<tr>

<td>

<asp:Button ID="btnExel" runat="server" Text="Export to Exel" OnClick="btnExel_Click" />

</td>

<td>

<asp:Button ID="btnWord" runat="server" Text="Export to Word" OnClick="btnWord_Click" />

</td>

<td>

<asp:Button ID="btnPdf" runat="server" Text="Export to Pdf" OnClick="btnPdf_Click" />

</td>

</tr>

<tr>

<td>

<asp:Button ID="btnCsv" runat="server" Text="Export to Csv" OnClick="btnCsv_Click" />

</td>

<td>

<asp:Button ID="btnText" runat="server" Text="Export to Text" OnClick="btnText_Click" />

</td>

<td>

<asp:Button ID="btnPrint" runat="server" Text="Print"

OnClientClick="PrintGridData();" onclick="btnPrint_Click" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data;

using System.Data.SqlClient;

using System.IO;

using System.Text;

using iTextSharp;

using iTextSharp.text;

using iTextSharp.text.html.simpleparser;

using iTextSharp.text.pdf;

public partial class Default3 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

Bind();

}

public void Bind()

{

SqlConnection con = new SqlConnection("Data Source=SERVER02\\sqlserver;Initial Catalog=EMPLOYEE;User ID=***;Password=********");

SqlDataAdapter da = new SqlDataAdapter("select * from customers", con);

DataSet ds = new DataSet();

da.Fill(ds);

gvDetails.DataSource = ds;

gvDetails.DataBind();

}

protected void btnExel_Click(object sender, EventArgs e)

{

Bind();

Response.ClearContent();

Response.Buffer = true;

Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Documents.xls"));

Response.ContentType = "application/ms-excel";

StringWriter sw = new StringWriter();

HtmlTextWriter ht = new HtmlTextWriter(sw);

gvDetails.RenderControl(ht);

Response.Write(sw.ToString());

Response.End();

}

protected void btnWord_Click(object sender, EventArgs e)

{

Bind();

Response.ClearContent();

Response.Buffer = true;

Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Documents.doc"));

Response.ContentType = "application/ms-word";

StringWriter sw = new StringWriter();

HtmlTextWriter ht = new HtmlTextWriter(sw);

gvDetails.RenderControl(ht);

Response.Write(sw.ToString());

Response.End();

}

protected void btnPdf_Click(object sender, EventArgs e)

{

Bind();

Response.ContentType = "Sunil/pdf";

Response.AddHeader("content-disposition", "attachment;filename=Documents.pdf");

Response.Cache.SetCacheability(HttpCacheability.NoCache);

StringWriter sw = new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

gvDetails.RenderControl(hw);

StringReader sr = new StringReader(sw.ToString());

Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);

HTMLWorker htmlparser = new HTMLWorker(pdfDoc);

PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

pdfDoc.Open();

htmlparser.Parse(sr);

pdfDoc.Close();

Response.Write(pdfDoc);

Response.End();

}

protected void btnText_Click(object sender, EventArgs e)

{

Bind();

Response.ClearContent();

Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Documents.txt"));

Response.ContentType = "application/text";

StringBuilder str = new StringBuilder();

for (int i = 0; i < gvDetails.Columns.Count; i++)

{

str.Append(gvDetails.Columns[i].HeaderText + ',');

}

str.Append("\n");

for (int j = 0; j < gvDetails.Rows.Count; j++)

{

for (int k = 0; k < gvDetails.Columns.Count; k++)

{

str.Append(gvDetails.Rows[j].Cells[k].Text + ',');

}

str.Append("\n");

}

Response.Write(str.ToString());

Response.End();

}

protected void btnPrint_Click(object sender, EventArgs e)

{

Bind();

}

public override void VerifyRenderingInServerForm(Control control)

{

}

protected void btnCsv_Click(object sender, EventArgs e)

{

Bind();

Response.ClearContent();

Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "Documents.txt"));

Response.ContentType = "application/text";

StringBuilder str = new StringBuilder();

for (int i = 0; i < gvDetails.Columns.Count; i++)

{

str.Append(gvDetails.Columns[i].HeaderText + ',');

}

str.Append("\n");

for (int j = 0; j < gvDetails.Rows.Count; j++)

{

for (int k = 0; k < gvDetails.Columns.Count; k++)

{

str.Append(gvDetails.Rows[j].Cells[k].Text + ',');

}

str.Append("\n");

}

Response.Write(str.ToString());

Response.End();

}

Aspdotnet.Sunil Kumar

Share Blog

Thursday, August 07, 2014

Custom Validator For Email And Mobile Number in Asp.net

Wednesday, August 06, 2014

How To Generate Random Password in Asp.net And C#

Monday, August 04, 2014

How To Create your own captcha image generator in asp.net using c#.net

Export GridView Data to Excel, Word, Pdf, Text and Csv Format and Print Using in Asp.Net

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