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Need help in update and delete in gridview

Posted By: sdas212 on 5/27/2012 12:30:54 AM | Comments:0 [Forward This]
Hello, I needed help in codes for update and delete options in grid view. Below is the code for the registration form and grid view. I want help with the codes in the adding update and delete options in the gridview. Default.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default2" %> <!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>Simple Application Form in ASP.Net</title> </head> <body> <form id="form1" runat="server"> <div> <div> <strong><span style="font-size: 14pt; color: #0000ff">Simple Application Form In ASP.Net</span></strong><br /> <br /> <br /> <br /> <table> <tr> <td style="width: 123px"> First Name</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="fname" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Last Name</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="lname" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Date of Birth</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="dob" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Gender</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="gender" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Father's Name</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="fathername" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Contact Number</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="contact" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px"> Address</td> <td style="width: 63px"> :</td> <td style="width: 193px"> <asp:TextBox ID="address" runat="server"></asp:TextBox></td> </tr> <tr> <td style="width: 123px; height: 21px"> </td> <td style="width: 63px; height: 21px"> </td> <td style="width: 193px; height: 21px"> <asp:Label ID="conform" runat="server" Text="Submitted, thank you !" Visible="False" Width="152px"></asp:Label></td> </tr> <tr> <td style="width: 123px"> </td> <td style="width: 63px; text-align: center"> </td> <td style="width: 193px"> <asp:Button ID="submit" runat="server" Text="Submit" OnClick="submit_Click" /></td> </tr> </table> </div> <br /> <br /> <strong><span style="text-decoration: underline">Database Details</span></strong><br /> <br /> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDataSource1" EmptyDataText="There are no data records to display."> <Columns> <asp:BoundField DataField="id" HeaderText="id" SortExpression="id" /> <asp:BoundField DataField="fname" HeaderText="fname" SortExpression="fname" /> <asp:BoundField DataField="lname" HeaderText="lname" SortExpression="lname" /> <asp:BoundField DataField="dob" HeaderText="dob" SortExpression="dob" /> <asp:BoundField DataField="gender" HeaderText="gender" SortExpression="gender" /> <asp:BoundField DataField="fathername" HeaderText="fathername" SortExpression="fathername" /> <asp:BoundField DataField="contact" HeaderText="contact" SortExpression="contact" /> <asp:BoundField DataField="address" HeaderText="address" SortExpression="address" /> </Columns> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:onlineapplicationformConnectionString1 %>" ProviderName="<%$ ConnectionStrings:onlineapplicationformConnectionString1.ProviderName %>" SelectCommand="SELECT [id], [fname], [lname], [dob], [gender], [fathername], [contact], [address] FROM [onlineapplication]"> </asp:SqlDataSource> </div> </form> </body> </html> Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Data.SqlClient; using System.ComponentModel; 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; public partial class Default2 : System.Web.UI.Page { public string GetConnectionString() { //we will set up the configuration which will call our //web.config file to provide the database details because //in configuration file we have created the <connectionStrings> //in the process we draged and droped. It creates automatically. //We normally put the database details in web.config file or //machine.config file because it is very sensitive information //usually there IP address of remote database, passwords and //user names are stored. return System.Configuration.ConfigurationManager.ConnectionStrings ["onlineapplicationformConnectionString1"].ConnectionString; //in above line "onlineapplicationformConnectionString1" is //our configuration name which is inside the web.config file. } private void execution(string fname, string lname, string dob, string gender, string fathername, string contact, string address) { //In above line we declaring different variables same as backend SqlConnection conn = new SqlConnection(GetConnectionString()); //In above line we are calling connection //string function which is defined already on top string sql = "INSERT INTO onlineapplication (fname, lname, dob, gender, fathername, contact, address) VALUES " + " (@fname, @lname, @dob, @gender, @fathername, @contact, @address)"; //In above lines we are just storing the sql commands which //will insert value in onlineapplication named table, //using variable named sql. try { conn.Open(); SqlCommand cmd = new SqlCommand(sql, conn); //In above lines we are opening the connection to work and //also storing connection name and sql command in cmd variable //which has 'SqlCommand' type. SqlParameter[] pram = new SqlParameter[7]; //In above lines we are defining 7 sql parameters will be use //In below lines we will not disscuss about id column pram[0] = new SqlParameter("@fname", SqlDbType.VarChar, 50); pram[1] = new SqlParameter("@lname", SqlDbType.VarChar, 50); pram[2] = new SqlParameter("@dob", SqlDbType.VarChar, 50); pram[3] = new SqlParameter("@gender", SqlDbType.Char, 10); pram[4] = new SqlParameter("@fathername", SqlDbType.VarChar, 50); pram[5] = new SqlParameter("@contact", SqlDbType.Int, 20); pram[6] = new SqlParameter("@address", SqlDbType.VarChar, 100); //Now we set-uped all fiels in database in above lines //Now we will set-up form fields pram[0].Value = fname; pram[1].Value = lname; pram[2].Value = dob; pram[3].Value = gender; pram[4].Value = fathername; pram[5].Value = contact; pram[6].Value = address; //Now create loop to insert for (int i = 0; i < pram.Length; i++) { cmd.Parameters.Add(pram[i]); } cmd.CommandType = CommandType.Text; cmd.ExecuteNonQuery(); } catch(System.Data.SqlClient.SqlException ex_msg) { //Here will be catch elements string msg = "Error occured while inserting"; msg += ex_msg.Message; throw new Exception(msg); } finally { //Here will be fially elements conn.Close(); } } protected void Page_Load(object sender, EventArgs e) { } protected void submit_Click(object sender, EventArgs e) { //Here is the command inside the click event of button if(fname.Text=="") { Response.Write("Please complete the form."); } else { execution(fname.Text,lname.Text,dob.Text,gender.Text,fathername.Text,contact.Text,address.Text); conform.Visible = true; fname.Text=""; lname.Text=""; dob.Text=""; gender.Text=""; gender.Text=""; fathername.Text=""; contact.Text=""; address.Text=""; } } }

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