خطاء في جملة انسرت

السلام عليكم ورحمه الله وبركاته

ياليت تساعودني في تصحيح الكود هذه

string con;

con = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

SqlConnection sqlcon = new SqlConnection();

sqlcon.ConnectionString = con;

SqlCommand sqlcom = new SqlCommand();

sqlcom.Connection = sqlcon;

Button mybtn = ((Button)(sender));

DataListItem dli = ((DataListItem)(mybtn.NamingContainer));

string not = ((TextBox)dli.FindControl("TextBox3")).Text;

string command, taha;

command = "insert into nots (id_text,nots,name,img) values(@id_text,@nots,@name,@img)";

sqlcom.CommandText = command;

sqlcon.Open();

sqlcom.Parameters.AddWithValue("@id_text",Label9.Text);

sqlcom.Parameters.AddWithValue("@nots", not);

sqlcom.Parameters.AddWithValue("@name", Session["name"]);

sqlcom.Parameters.AddWithValue("@img", Session["ali"]);

taha = sqlcom.ExecuteNonQuery().ToString();

sqlcon.Close();

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هذه الكود والخطاء هنا

The INSERT statement conflicted with the FOREIGN KEY constraint "FK_nots_text". The conflict occurred in database "C:\USERS\SONY\DESKTOP\SOSO\APP_DATA\DATABASE.MDF", table "dbo.text", column 'id_text'.

The statement has been terminated