Creating a Simple Registration Form in ASP.NET,
when debugging my page after entering the details it's showing one error like "invalidoperati onexception was unhandled by user code"
Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlTypes;
using System.Data;
using System.Data.SqlClient;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
public string GetConnectionString()
{
//sets the connection string from your web config file "ConnString" is the name of your Connection String
return System.Configuration.ConfigurationManager.ConnectionStrings["MyConsString"].ConnectionString;
}
private void ExecuteInsert(string name, string username, string password, string gender, string age, string address)
{
SqlConnection conn = new SqlConnection(GetConnectionString());
string sql = "INSERT INTO tblRegistration (Name, UserName, Password, Gender, Age, Address) VALUES "
+ " (@Name,@UserName,@Password,@Gender,@Age,@Address)";
try
{
conn.Open();
SqlCommand cmd = new SqlCommand(sql, conn);
SqlParameter[] param = new SqlParameter[6];
param[0] = new SqlParameter("@id", SqlDbType.Int, 20);
param[0] = new SqlParameter("@Name", SqlDbType.VarChar, 50);
param[1] = new SqlParameter("@UserName", SqlDbType.VarChar, 50);
param[2] = new SqlParameter("@Password", SqlDbType.VarChar, 50);
param[3] = new SqlParameter("@Gender", SqlDbType.Char, 10);
param[4] = new SqlParameter("@Age", SqlDbType.Int, 100);
param[5] = new SqlParameter("@Address", SqlDbType.VarChar, 50);
param[0].Value = name;
param[1].Value = username;
param[2].Value = password;
param[3].Value = gender;
param[4].Value = age;
param[5].Value = address;
for (int i = 0; i < param.Length; i++)
{
cmd.Parameters.Add(param[i]);
}
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
catch (System.Data.SqlClient.SqlException ex)
{
string msg = "Insert Error:";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
conn.Close();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
if (TxtPassword.Text == TxtRePassword.Text)
{
//call the method to execute insert to the database
ExecuteInsert(TxtName.Text, TxtUserName.Text, TxtPassword.Text, DropDownList1.SelectedItem.Text, TxtAge.Text, TxtAddress.Text);
Response.Write("Record was successfully added!");
ClearControls(Page);
}
else
{
Response.Write("Password did not match");
TxtPassword.Focus();
}
}
public static void ClearControls(Control Parent)
{
if (Parent is TextBox)
{ (Parent as TextBox).Text = string.Empty; }
else
{
foreach (Control c in Parent.Controls)
ClearControls(c);
}
}
}
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