Using the below sample i have modified the javascript code.
Check this example. Now please take its reference and correct your code.
Login.aspx
<table>
<tr>
<td>
UserName:
</td>
<td>
<asp:TextBox ID="txtUserName" runat="server" />
</td>
</tr>
<tr>
<td>
Password:
</td>
<td>
<asp:TextBox ID="txtPassword" runat="server" />
</td>
</tr>
<tr>
<td colspan="2">
<asp:Button ID="Button1" Text="Login" OnClick="ValidateLogin" runat="server" />
</td>
</tr>
</table>
Login.aspx.cs
protected void ValidateLogin(object sender, EventArgs e)
{
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
using (SqlConnection con = new SqlConnection(constr))
{
string query = "SELECT UserName FROM Users WHERE UserName = @Username AND Password = @Password";
using (SqlCommand cmd = new SqlCommand(query, con))
{
if (!string.IsNullOrEmpty(txtUserName.Text.Trim()) && !string.IsNullOrEmpty(txtPassword.Text.Trim()))
{
cmd.Parameters.AddWithValue("@Username", txtUserName.Text.Trim());
cmd.Parameters.AddWithValue("@Password", txtPassword.Text.Trim());
con.Open();
string userName = cmd.ExecuteScalar().ToString();
Session["UserName"] = userName;
con.Close();
if (!string.IsNullOrEmpty(userName))
{
Response.Redirect("Home.aspx");
}
else
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", "alert('Invalid UserName or Password!')", true);
}
}
else
{
ClientScript.RegisterClientScriptBlock(this.GetType(), "Alert", "alert('UserName and Password Required!')", true);
}
}
}
}
Home.aspx
<div>
<asp:FormView ID="FormView1CHOICE" runat="server" OnDataBound="FormView1CHOICE_DataBound">
<HeaderTemplate>
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<th>
Id
</th>
<th>
UserName
</th>
<th>
FriendUserName
</th>
<th>
UserStatus
</th>
<th>
Count
</th>
<th>
</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:Label Text='<%# Eval("Id") %>' runat="server" />
</td>
<td>
<asp:Label ID="Label1" Text='<%# Eval("UserName") %>' runat="server" />
</td>
<td>
<asp:Label ID="Label2" Text='<%# Eval("FriendUserName") %>' runat="server" />
</td>
<td>
<asp:Label ID="Label3" Text='<%# Eval("UserStatus") %>' runat="server" />
</td>
<td>
<asp:Label ID="Label4" Text='<%# Eval("Count") %>' runat="server" />
</td>
<td>
<asp:LinkButton ID="btnADD" Text="Add" runat="server" />
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
<PagerTemplate>
<table>
<tr>
<td>
<asp:LinkButton ID="FirstButton" CommandName="Page" CommandArgument="First" Text="<<"
runat="server" />
</td>
<td>
<asp:LinkButton ID="PrevButton" CommandName="Page" CommandArgument="Prev" Text="<"
runat="server" />
</td>
<td>
<asp:LinkButton ID="NextButton" CommandName="Page" CommandArgument="Next" Text=">"
runat="server" />
</td>
<td>
<asp:LinkButton ID="LastButton" CommandName="Page" CommandArgument="Last" Text=">>"
runat="server" />
</td>
</tr>
</table>
</PagerTemplate>
</asp:FormView>
</div>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" />
<script type="text/javascript">
$(function () {
$('[id*=btnADD]').on('click', function () {
var username = $(this).closest('tr').find('[id*=Label1]').text();
var button = $(this);
var userStatus = $(this).closest('tr').find('[id*=Label3]');
var count = $(this).closest('tr').find('[id*=Label4]');
$.ajax({
type: "POST",
url: "Home.aspx/UpdateStatus",
data: '{userName: "' + username + '" }',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
$(button).text(($(button).text() == "Add") ? "Added" : "Add");
$(userStatus).text(($(userStatus).text() == "False") ? "True" : "False");
$(count).text(($(count).text() == "0") ? "1" : "0");
},
failure: function (response) {
alert(response.responseText);
}
});
return false;
});
});
</script>
Home.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindFormView();
}
}
string count = "";
protected void FormView1CHOICE_DataBound(object sender, EventArgs e)
{
(FormView1CHOICE.FindControl("btnAdd") as LinkButton).Text = count == "1" ? "Added" : "Add";
}
public void BindFormView()
{
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
SqlConnection con = new SqlConnection(constr);
if (Session["UserName"] != null && !string.IsNullOrEmpty(Session["UserName"].ToString()))
{
}
SqlCommand cmd = new SqlCommand("SELECT * FROM Status WHERE UserName = @UserName", con);
cmd.Parameters.AddWithValue("@UserName", Session["UserName"].ToString());
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
count = dt.Rows[0]["Count"].ToString();
FormView1CHOICE.DataSource = dt;
FormView1CHOICE.DataBind();
}
[System.Web.Services.WebMethod]
public static void UpdateStatus(string userName)
{
string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
SqlConnection con = new SqlConnection(constr);
SqlCommand cmd = new SqlCommand("SELECT * FROM Status WHERE UserName = @UserName", con);
cmd.Parameters.AddWithValue("@UserName", userName);
con.Open();
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
con.Close();
sda.Fill(dt);
if (dt.Rows.Count > 0)
{
string status = dt.Rows[0]["UserStatus"].ToString();
string count = dt.Rows[0]["Count"].ToString();
SqlConnection con1 = new SqlConnection(constr);
SqlCommand cmd1 = new SqlCommand("UPDATE Status SET UserStatus = @Status, Count = @Count WHERE UserName = @UserName", con1);
con1.Open();
cmd1.Parameters.AddWithValue("@UserName", userName);
if (status.ToLower() == "true" && count == "1")
{
cmd1.Parameters.AddWithValue("@Status", "0");
cmd1.Parameters.AddWithValue("@Count", "0");
}
else
{
cmd1.Parameters.AddWithValue("@Status", "1");
cmd1.Parameters.AddWithValue("@Count", "1");
}
cmd1.ExecuteNonQuery();
con1.Close();
}
}
Screenshot
