login failed for user error

Question

i'm getting login failed for user     error plz help me

 

 

my code is

 

 

app.config

 

 

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

<configSections>

</configSections>

<connectionStrings>

<add name="WindowsFormsApplication1.Properties.Settings.Database1ConnectionString"

connectionString="Data Source=jiyalal-pc\SQLEXPRESS;Initial Catalog= Database1;Integrated Security=false;User Instance=true"

providerName="System.Data.SqlClient" />

</connectionStrings>

</configuration>

 

 

 

and my WindowsFormsApplication1.cs code

 

 

private void button1_Click(object sender, EventArgs e)

{

try

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["WindowsFormsApplication1.Properties.Settings.Database1ConnectionString"].ConnectionString);

con.Open();

SqlCommand com = new SqlCommand("insert into tt values('" + textBox1.Text + "')", con);

int h = com.ExecuteNonQuery();

if (h > 0)

{

MessageBox.Show("saved");

}

con.Close();

}

catch(Exception ex)

{

MessageBox.Show(ex.Message);

}

 

plz help