SOURCE CODE: May 2015

How to use Detailview in ASP.net

// Default.aspx //

<%@ 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">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title> Detail View </title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
  <b>Details View Example</b><br />
<br />
  <asp:Label ID="lblmsg" runat="server"></asp:Label><br /><br />
<asp:DetailsView ID="DetailsView1" runat="server" Height="50px" Width="400px" AutoGenerateRows="False"
CellPadding="4" ForeColor="#333333" GridLines="None" OnItemUpdating="DetailsView1_ItemUpdating"
OnModeChanging="DetailsView1_ModeChanging"
OnItemCommand="DetailsView1_ItemCommand" AllowPaging="true"
oniteminserting="DetailsView1_ItemInserting"
onitemdeleting="DetailsView1_ItemDeleting"
onpageindexchanging="DetailsView1_PageIndexChanging">
  <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<CommandRowStyle BackColor="#E2DED6" Font-Bold="True" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
  <FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" />
  <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
  <Fields>
  <asp:TemplateField HeaderText="ID">
<ItemTemplate>
  <asp:Label ID="lbleno" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.ID") %>'></asp:Label>
  </ItemTemplate>
<EditItemTemplate>
  <asp:TextBox ID="txteno" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.ID") %>'></asp:TextBox>
  </EditItemTemplate>
  </asp:TemplateField>

  <asp:TemplateField HeaderText="Student Name">
<ItemTemplate>
<asp:Label ID="lblempname" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Name") %>'></asp:Label>
  </ItemTemplate>
<EditItemTemplate>
  <asp:TextBox ID="txtempname" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Name") %>'></asp:TextBox>
</EditItemTemplate>
  </asp:TemplateField>

<asp:TemplateField HeaderText="Address">
<ItemTemplate>
<asp:Label ID="lblsal" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Address") %>'></asp:Label>
</ItemTemplate>
  <EditItemTemplate>
  <asp:TextBox ID="txtsal" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Address") %>'></asp:TextBox>
</EditItemTemplate>
  </asp:TemplateField>
  <asp:CommandField ShowDeleteButton="True"></asp:CommandField>
<asp:CommandField ShowInsertButton="True"></asp:CommandField>
<asp:CommandField ShowEditButton="True" CancelText="Cancel" EditText="Edit" UpdateText="Update" />
  </Fields>
  <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<EditRowStyle BackColor="#999999" />
  <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
</asp:DetailsView>
  </div>

</form>
</body>

</html>

// Default.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.Data;
using System.Data.SqlClient;
using System.Configuration;

public partial class _Default : System.Web.UI.Page
{
SqlConnection sqlcon = new SqlConnection(ConfigurationManager.ConnectionStrings["Pubs"].ConnectionString);
SqlCommand sqlcmd = new SqlCommand();
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
LoadDet();
}
}
void LoadDet()
{
sqlcon.Open();
sqlcmd = new SqlCommand("select * from Add_Record", sqlcon);
da = new SqlDataAdapter(sqlcmd);
da.Fill(dt);
sqlcon.Close();
DetailsView1.DataSource = dt;
DetailsView1.DataBind();
}

//Below code is used to display page wise records

protected void DetailsView1_PageIndexChanging(object sender, DetailsViewPageEventArgs e)
{
DetailsView1.PageIndex = e.NewPageIndex;
LoadDet();
}
protected void DetailsView1_ModeChanging(object sender, DetailsViewModeEventArgs e)
{
if (e.CancelingEdit == true)
{
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly);
LoadDet();
}

}

//Below code is used to update record details

protected void DetailsView1_ItemUpdating(object sender, DetailsViewUpdateEventArgs e)
{
string eno = ((TextBox)DetailsView1.FindControl("ID")).Text.ToString();
string empname = ((TextBox)DetailsView1.FindControl("Name")).Text.ToString();
string Add = ((TextBox)DetailsView1.FindControl("Address")).Text.ToString();
sqlcon.Open();
sqlcmd = new SqlCommand("UPDATE Add_Record SET Name='" + empname + "', Address='" + Add + "' WHERE ID='" + eno + "' ", sqlcon);
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly);
LoadDet();
}
protected void DetailsView1_ItemCommand(object sender, DetailsViewCommandEventArgs e)
{
if (e.CommandName == "New")
{
DetailsView1.ChangeMode(DetailsViewMode.Insert);
LoadDet();
}
if (e.CommandName == "Edit")
{
DetailsView1.ChangeMode(DetailsViewMode.Edit);
LoadDet();
}
}

//Below code is used to insert record into database table

protected void DetailsView1_ItemInserting(object sender, DetailsViewInsertEventArgs e)
{
sqlcon.Open();
string eno = ((TextBox)DetailsView1.FindControl("ID")).Text.ToString();
string empname = ((TextBox)DetailsView1.FindControl("Name")).Text.ToString();
string sal = ((TextBox)DetailsView1.FindControl("Address")).Text.ToString();
SqlCommand cmd = new SqlCommand("select ID from Add_Record where ID = '" + eno + "'", sqlcon);
SqlDataReader dr = cmd.ExecuteReader();
if (dr.Read())
{
lblmsg.Text = "User No already exists";
}
else
{
dr.Close();
sqlcmd = new SqlCommand("insert into Add_Record values('" + eno + "', '" + empname + "', '" + sal + "')", sqlcon);
sqlcmd.ExecuteNonQuery();
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly);
}
sqlcon.Close();
LoadDet();
}

//Below code is used to delete record from database

protected void DetailsView1_ItemDeleting(object sender, DetailsViewDeleteEventArgs e)
{
string eno = ((Label)DetailsView1.Rows[0].FindControl("lbleno")).Text;
sqlcon.Open();
sqlcmd = new SqlCommand("delete from Add_Record where ID = '" + eno + "'", sqlcon);
sqlcmd.ExecuteNonQuery();
sqlcon.Close();
DetailsView1.ChangeMode(DetailsViewMode.ReadOnly);
LoadDet();
}
}

SQL TABLE

OUTPUT

Print page content placed inside DIV tag using JavaScript 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">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Print DIV Content using javaScript</title>
  <script language="javascript" type="text/javascript">
function PrintDivContent(divId) {
var printContent = document.getElementById(divId);
var WinPrint = window.open('', '', 'left=0,top=0,toolbar=0,status=0');
WinPrint.document.write(printContent.innerHTML);
WinPrint.document.close();
WinPrint.focus();
WinPrint.print();
}
  </script>
</head>
<body>
  <form id="form1" runat="server">
<div>
  <div id="divToPrint">
This is a sample content to print
sourcecodernp.blogspot.com
sourcecodernp.blogspot.com
sourcecodernp.blogspot.com
  </div>
  <br />

  <asp:ImageButton ID="imgBtnPrint" runat="server" ImageUrl="~/Print_button.png" OnClientClick="javascript:PrintDivContent('divToPrint');" />
  </div>
</form>
</body>
</html>

OUTPUT SCREEN SHOT

C Program to Input Password for Validation of User name

#include<stdio.h>
#include<conio.h>

void main() {
char password[25], ch;
int i;

clrscr();
puts("Enter password : ");

while (1) {
if (i < 0) {
i = 0;
}
ch = getch();

if (ch == 13)
break;
if (ch == 8) /*ASCII value of BACKSPACE*/
{
putch('b');
putch(NULL);
putch('b');
i--;
continue;
}

password[i++] = ch;
ch = '*';
putch(ch);
}

password[i] = '\0';
printf("\nPassword Entered : %s", password);

getch();
}

OUTPUT

Enter password : **********
Password Entered : sourcecode

C Program to Implement Calender Program to display Day of the month

#include<stdio.h>
#include<conio.h>
#include<math.h>

int fm(int date, int month, int year) {
int fmonth, leap;

//leap function 1 for leap & 0 for non-leap
if ((year % 100 == 0) && (year % 400 != 0))
leap = 0;
else if (year % 4 == 0)
leap = 1;
else
leap = 0;

fmonth = 3 + (2 - leap) * ((month + 2) / (2 * month))
+ (5 * month + month / 9) / 2;

//bring it in range of 0 to 6
fmonth = fmonth % 7;

return fmonth;
}

int day_of_week(int date, int month, int year) {

int dayOfWeek;
int YY = year % 100;
int century = year / 100;

printf("\nDate: %d/%d/%d \n", date, month, year);

dayOfWeek = 1.25 * YY + fm(date, month, year) + date - 2 * (century % 4);

//remainder on division by 7
dayOfWeek = dayOfWeek % 7;

switch (dayOfWeek) {
case 0:
printf("weekday = Saturday");
break;
case 1:
printf("weekday = Sunday");
break;
case 2:
printf("weekday = Monday");
break;
case 3:
printf("weekday = Tuesday");
break;
case 4:
printf("weekday = Wednesday");
break;
case 5:
printf("weekday = Thursday");
break;
case 6:
printf("weekday = Friday");
break;
default:
printf("Incorrect data");
}
return 0;
}

int main() {
int date, month, year;

printf("\nEnter the year ");
scanf("%d", &year);

printf("\nEnter the month ");
scanf("%d", &month);

printf("\nEnter the date ");
scanf("%d", &date);

day_of_week(date, month, year);

return 0;
}

OUTPUT

Enter the year 2012
Enter the month 02
Enter the date 29
Date: 29/2/2012

weekday = Wednesday

Insert, update and delete using sql in c#

// Default.aspx //

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Students" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

  <title>Untitled Page</title>
</head>
<body>
  <form id="form1" runat="server">
  <div>
<div>
  <br />
  <asp:Label id="Label1" runat="server">Select Author:</asp:Label>
  <asp:DropDownList id="lstAuthor" runat="server" AutoPostBack="True" onselectedindexchanged="lstAuthor_SelectedIndexChanged"></asp:DropDownList>
<asp:Button id="cmdUpdate" runat="server" Text="Update" onclick="cmdUpdate_Click"></asp:Button>
<asp:Button id="cmdDelete" runat="server" Text="Delete" onclick="cmdDelete_Click"></asp:Button>
  <br />
<asp:Label id="Label11" runat="server" Width="99px" Height="19px">Or:</asp:Label>
  <asp:Button id="cmdNew" runat="server" Width="91px" Height="24px" Text="Create New" onclick="cmdNew_Click"></asp:Button>
  <asp:Button id="cmdInsert" runat="server" Width="85px" Height="24px" Text="Insert New" onclick="cmdInsert_Click"></asp:Button>
</div>
<br />
  <div>
<asp:Label id="Label10" runat="server" Width="100px">Unique ID:</asp:Label>
  <asp:TextBox id="txtID" runat="server" Width="184px"></asp:TextBox>
(required: ###-##-#### form)>br />

<asp:Label id="Label2" runat="server" Width="100px">First Name:</asp:Label>
  <asp:TextBox id="txtFirstName" runat="server" Width="184px"></asp:TextBox><br />

  <asp:Label id="Label3" runat="server" Width="100px">Last Name: </asp:Label>
  <asp:TextBox id="txtLastName" runat="server" Width="183px"></asp:TextBox><br />

  <asp:Label id="Label4" runat="server" Width="100px">Phone:</asp:Label>
  <asp:TextBox id="txtPhone" runat="server" Width="183px"></asp:TextBox><br />

<asp:Label id="Label5" runat="server" Width="100px">Address:</asp:Label>
  <asp:TextBox id="txtAddress" runat="server" Width="183px"> </asp:TextBox><br />

  <asp:Label id="Label6" runat="server" Width="100px">City:</asp:Label>
<asp:TextBox id="txtCity" runat="server" Width="184px"> </asp:TextBox><br />

<asp:Label id="Label7" runat="server" Width="100px">State:</asp:Label>
  <asp:TextBox id="txtState" runat="server" Width="184px">

<br />
  <asp:Label id="Label9" runat="server" Width="100px">Zip Code:</asp:Label>
  <asp:TextBox id="txtZip" runat="server" Width="184px"></asp:TextBox>
(required: any five digits)<br />
  <br />

<asp:Label id="Label8" runat="server" Width="93px" Height="19px">Contract:</asp:Label>
<asp:CheckBox id="chkContract" runat="server"> </asp:CheckBox><br />
<br />

  <asp:Label id="lblResults" runat="server" Width="575px" Height="121px" Font-Bold="True"></asp:Label>
  </div>
</div>
</form>
</body>
</html>



// Default.aspx.cs //

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Configuration;
using System.Data.SqlClient;

public partial class Students : System.Web.UI.Page
{
private string connectionString = WebConfigurationManager.ConnectionStrings["Con"].ConnectionString;

protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
FillAuthorList();
}
}

private void FillAuthorList()
{
lstAuthor.Items.Clear();
string selectSQL = "SELECT au_lname, au_fname, au_id FROM Authors";

SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(selectSQL, con);
SqlDataReader reader;

try
{
con.Open();
reader = cmd.ExecuteReader();
while (reader.Read())
{
ListItem newItem = new ListItem();
newItem.Text = reader["lname"] + ", " + reader["fname"];
newItem.Value = reader["id"].ToString();
lstAuthor.Items.Add(newItem);
}
reader.Close();
}
catch (Exception err)
{
lblResults.Text = "Error reading list of names. ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}
}

protected void lstAuthor_SelectedIndexChanged(object sender, EventArgs e)
{
string selectSQL;
selectSQL = "SELECT * FROM Authors ";
selectSQL += "WHERE id='" + lstAuthor.SelectedItem.Value + "'";
SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(selectSQL, con);
SqlDataReader reader;

try
{
con.Open();
reader = cmd.ExecuteReader();
reader.Read();

txtID.Text = reader["id"].ToString();
txtFirstName.Text = reader["fname"].ToString();
txtLastName.Text = reader["lname"].ToString();
txtPhone.Text = reader["phone"].ToString();
txtAddress.Text = reader["address"].ToString();
txtCity.Text = reader["city"].ToString();
txtState.Text = reader["state"].ToString();
txtZip.Text = reader["zip"].ToString();
chkContract.Checked = (bool)reader["contract"];
reader.Close();
lblResults.Text = "";
}
catch (Exception err)
{
lblResults.Text = "Error getting author. ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}

}
protected void cmdNew_Click(object sender, EventArgs e)
{
txtID.Text = "";
txtFirstName.Text = "";
txtLastName.Text = "";
txtPhone.Text = "";
txtAddress.Text = "";
txtCity.Text = "";
txtState.Text = "";
txtZip.Text = "";
chkContract.Checked = false;

lblResults.Text = "Click Insert New to add the completed record.";

}
protected void cmdInsert_Click(object sender, EventArgs e)
{
if (txtID.Text == "" || txtFirstName.Text == "" || txtLastName.Text == "")
{
lblResults.Text = "Records require an ID, first name, and last name.";
return;
}
string insertSQL;
insertSQL = "INSERT INTO Authors (";
insertSQL += "id, fname,lname, ";
insertSQL += "phone, address, city, state, zip, contract) ";
insertSQL += "VALUES (";
insertSQL += "@id, @fname, @lname, ";
insertSQL += "@phone, @address, @city, @state, @zip, @contract)";

SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(insertSQL, con);

cmd.Parameters.AddWithValue("@id", txtID.Text);
cmd.Parameters.AddWithValue("@fname", txtFirstName.Text);
cmd.Parameters.AddWithValue("@lname", txtLastName.Text);
cmd.Parameters.AddWithValue("@phone", txtPhone.Text);
cmd.Parameters.AddWithValue("@address", txtAddress.Text);
cmd.Parameters.AddWithValue("@city", txtCity.Text);
cmd.Parameters.AddWithValue("@state", txtState.Text);
cmd.Parameters.AddWithValue("@zip", txtZip.Text);
cmd.Parameters.AddWithValue("@contract", Convert.ToInt16(chkContract.Checked));

int added = 0;
try
{
con.Open();
added = cmd.ExecuteNonQuery();
lblResults.Text = added.ToString() + " record inserted.";
}
catch (Exception err)
{
lblResults.Text = "Error inserting record. ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}

if (added > 0)
{
FillAuthorList();
}
}

protected void cmdUpdate_Click(object sender, EventArgs e)
{
string updateSQL;
updateSQL = "UPDATE Authors SET ";
updateSQL += "fname=@fname, lname=@lname, ";
updateSQL += "phone=@phone, address=@address, city=@city, state=@state, ";
updateSQL += "zip=@zip, contract=@contract ";
updateSQL += "WHERE id=@id_original";

SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(updateSQL, con);

cmd.Parameters.AddWithValue("@fname", txtFirstName.Text);
cmd.Parameters.AddWithValue("@lname", txtLastName.Text);
cmd.Parameters.AddWithValue("@phone", txtPhone.Text);
cmd.Parameters.AddWithValue("@address", txtAddress.Text);
cmd.Parameters.AddWithValue("@city", txtCity.Text);
cmd.Parameters.AddWithValue("@state", txtState.Text);
cmd.Parameters.AddWithValue("@zip", txtZip.Text);
cmd.Parameters.AddWithValue("@contract", Convert.ToInt16(chkContract.Checked));
cmd.Parameters.AddWithValue("@id_original", lstAuthor.SelectedItem.Value);

int updated = 0;
try
{
con.Open();
updated = cmd.ExecuteNonQuery();
lblResults.Text = updated.ToString() + " record updated.";
}
catch (Exception err)
{
lblResults.Text = "Error updating author. ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}

if (updated > 0)
{
FillAuthorList();
}

}
protected void cmdDelete_Click(object sender, EventArgs e)
{
string deleteSQL;
deleteSQL = "DELETE FROM Authors ";
deleteSQL += "WHERE id=@id";

SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(deleteSQL, con);
cmd.Parameters.AddWithValue("@id ", lstAuthor.SelectedItem.Value);

int deleted = 0;
try
{
con.Open();
deleted = cmd.ExecuteNonQuery();
lblResults.Text = "Record deleted.";
}
catch (Exception err)
{
lblResults.Text = "Error deleting author. ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}
if (deleted > 0)
{
FillAuthorList();
}
}
}

SOURCE CODE

Page

How to use Detailview in ASP.net

Print page content placed inside DIV tag using JavaScript in Asp.net

C Program to Input Password for Validation of User name

C Program to Implement Calender Program to display Day of the month

Insert, update and delete using sql in c#

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