Question

我试图将文本框中的数据插入到我的数据库中，这给我一个例外。

异常详细信息：System.Data.SqlClient.SqlException：'test'附近的语法不正确。

在我提交代码之前的一些细节：我的数据库叫做：电影我的表数据称为：用户我有一些列，如：“FirstName”，“LastName”等...

protected void Register_Click（object sender，EventArgs e） { SqlConnection connection = new SqlConnection（“Data Source = MICROSOF-58B8A5 \ SQL_SERVER_R2; Initial Catalog = Movie; Integrated Security = True”）;

        connection.Open();
        //FirstName***********
        string firstName = FirstNameTextBox.Text;
        string sqlquery = ("INSERT INTO [Users] (FirstName) VALUES (' " +FirstNameTextBox.Text + " ' ");

        SqlCommand command = new SqlCommand(sqlquery , connection);
        command.Parameters.AddWithValue("FirstName", firstName);
        //LastName************
        string lastName = LastNameTextBox.Text;
        sqlquery = ("INSERT INTO [Users] (LastName) VALUES (' " + LastNameTextBox.Text+ " ' ");
        command.Parameters.AddWithValue("LastName", lastName);
        //Username*************
        string username = UsernameTextBox.Text;
        sqlquery = ("INSERT INTO [Users] (Username) VALUES (' " + UsernameTextBox.Text+ " ' ");
        command.Parameters.AddWithValue("UserName", username);
        //Password*************
        string password = PasswordTextBox.Text;
        sqlquery = ("INSERT INTO [Users] (Password) VALUES (' " + PasswordTextBox.Text + " ' ");
        command.Parameters.AddWithValue("Password", password);
        if (PasswordTextBox.Text == ReTypePassword.Text)
        {
            command.ExecuteNonQuery();
        }
        else
        {
            ErrorLabel.Text = "Sorry, You didnt typed your password correctly.  Please type again.";
        }

        connection.Close();
    }

Answer 1

使用一个查询并使用@ParamName：

    string sqlquery = "INSERT INTO [Users] (FirstName,LastName,UserName,Password) VALUES (@FirstName,@LastName,@UserName,@Password)";
    SqlCommand command = new SqlCommand(sqlquery , connection);

    //FirstName***********
    string firstName = FirstNameTextBox.Text;
    command.Parameters.AddWithValue("FirstName", firstName);
    //LastName************
    string lastName = LastNameTextBox.Text;     
    command.Parameters.AddWithValue("LastName", lastName);
    //Username*************
    string username = UsernameTextBox.Text;     
    command.Parameters.AddWithValue("UserName", username);
    //Password*************
    string password = PasswordTextBox.Text;    
    command.Parameters.AddWithValue("Password", password);

    ...........

Answer 2

问题似乎是您正在创建一个奇怪的SQL指令。它的真正价值在于 INSERT INTO [Users]（FirstName）VALUES（'（theValue）'）而且你没有添加其余的值（姓氏等）。其余代码什么都不做，因为查询不包含其余参数。

Answer 3

也许这段代码更短：

sqlcommand command=new sqlcommand("insert into[Users](FirstName,LastName,UserName,Password) values('"+FirstNameTextBox.Text+"','"+LastNameTextBox.Text+"','"+UsernameTextBox.Text+"','"+PasswordTextBox.Text+"')",connection);
command.ExecuteNonQuery();

Answer 4

也添加以下内容：

string sqlquery = "INSERT INTO [Users] (FirstName,LastName,Username,Password) VALUES ( " +FirstNameTextBox.Text + " ,";
sqlquery +=  LastNameTextBox.Text+ ",";
sqlquery +=   UsernameTextBox.Text+ ",";
sqlquery +=  PasswordTextBox.Text + " )";
SqlCommand command = new SqlCommand(sqlquery , connection);

ASP.Net将数据从Textbox插入数据库

4 个答案: