Question

所以我正在尝试使用asp.net网络表单制作库存管理网络应用程序，我已经争取了大约三个小时来获取此代码以连接数据库，这样做现在看来我的网络应用程序中的文本输入字段中的文本没有传递到数据库，我目前不知道什么是停止它。

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStringDb1"].ConnectionString);

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        //'" + ItemTextBox.Text + "','" + BrandTextBox.Text + "','" + CostTextBox.Text + "','" + PriceTextBox.Text + "'" + ColourTextBox.Text + "'" + SizeTextBox.Text + "'" + QuantityTextBox.Text + ")", con
        con.Open();
        string sqlquery = "insert into [Project_X_Or] (Item,Brand,Cost,Price,Colour,Size,Quantity) values (@Item,@Brand,@Cost,@Price,@Colour,@Size,@Quantity)";
        SqlCommand command = new SqlCommand(sqlquery, con);
        command.ExecuteNonQuery();

        //Item Name**********
        string Item = ItemTextBox.Text;
        command.Parameters.AddWithValue("Item", Item);
        //Brand Of Product**********
        string Brand = BrandTextBox.Text;
        command.Parameters.AddWithValue("Brand", Brand);
        //Cost Of Item From Supplier**********
        string Cost = CostTextBox.Text;
        command.Parameters.AddWithValue("Cost", Cost);
        //Price Of Item When Sold With Design**********
        string Price = PriceTextBox.Text;
        command.Parameters.AddWithValue("Price", Price);
        //Colour Of Product**********
        string Colour = ColourTextBox.Text;
        command.Parameters.AddWithValue("Colour", Colour);
        //Size of Product (T-Shirts, Hoodies)**********
        string Size = SizeTextBox.Text;
        command.Parameters.AddWithValue("Size", Size);
        //Quantity Of Product In Stock**********
        string Quantity = QuantityTextBox.Text;
        command.Parameters.AddWithValue("Quantity", Quantity);
        con.Close();


        string result = "Added  " + Item + " " + Brand + " " + Cost + " " + Cost + " " + Price + " " + Colour + " " + Size + " " + Quantity;

        resultLabel.Text = result;

        if (string.IsNullOrEmpty(ItemTextBox.Text))
        {
            resultLabel.Text=("Enter Item Into Item Field");
        }

        if (string.IsNullOrEmpty(QuantityTextBox.Text))
        {
            resultLabel.Text = ("Enter Amount Into Quantity Field");
        }
        //if (string.IsNullOrEmpty(""))
        //    {
        //    resultLabel2.Text = ("Please Fill Out Fields Above");
        //}


        ItemTextBox.Text = string.Empty;
        BrandTextBox.Text = string.Empty;
        CostTextBox.Text = string.Empty;
        PriceTextBox.Text = string.Empty;
        ColourTextBox.Text = string.Empty;
        SizeTextBox.Text = string.Empty;
        QuantityTextBox.Text = string.Empty;
    }

Answer 1

添加Execute后，您应该Paramter

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnStringDb1"].ConnectionString);

protected void Page_Load(object sender, EventArgs e)
{

}

protected void Button1_Click(object sender, EventArgs e)
{
    //'" + ItemTextBox.Text + "','" + BrandTextBox.Text + "','" + CostTextBox.Text + "','" + PriceTextBox.Text + "'" + ColourTextBox.Text + "'" + SizeTextBox.Text + "'" + QuantityTextBox.Text + ")", con
    con.Open();
    string sqlquery = "insert into [Project_X_Or] (Item,Brand,Cost,Price,Colour,Size,Quantity) values (@Item,@Brand,@Cost,@Price,@Colour,@Size,@Quantity)";
    SqlCommand command = new SqlCommand(sqlquery, con);

    //Item Name**********
    string Item = ItemTextBox.Text;
    command.Parameters.AddWithValue("Item", Item);
    //Brand Of Product**********
    string Brand = BrandTextBox.Text;
    command.Parameters.AddWithValue("Brand", Brand);
    //Cost Of Item From Supplier**********
    string Cost = CostTextBox.Text;
    command.Parameters.AddWithValue("Cost", Cost);
    //Price Of Item When Sold With Design**********
    string Price = PriceTextBox.Text;
    command.Parameters.AddWithValue("Price", Price);
    //Colour Of Product**********
    string Colour = ColourTextBox.Text;
    command.Parameters.AddWithValue("Colour", Colour);
    //Size of Product (T-Shirts, Hoodies)**********
    string Size = SizeTextBox.Text;
    command.Parameters.AddWithValue("Size", Size);
    //Quantity Of Product In Stock**********
    string Quantity = QuantityTextBox.Text;
    command.Parameters.AddWithValue("Quantity", Quantity);
    command.ExecuteNonQuery();
    con.Close();


    string result = "Added  " + Item + " " + Brand + " " + Cost + " " + Cost + " " + Price + " " + Colour + " " + Size + " " + Quantity;

    resultLabel.Text = result;

    if (string.IsNullOrEmpty(ItemTextBox.Text))
    {
        resultLabel.Text=("Enter Item Into Item Field");
    }

    if (string.IsNullOrEmpty(QuantityTextBox.Text))
    {
        resultLabel.Text = ("Enter Amount Into Quantity Field");
    }
    //if (string.IsNullOrEmpty(""))
    //    {
    //    resultLabel2.Text = ("Please Fill Out Fields Above");
    //}


    ItemTextBox.Text = string.Empty;
    BrandTextBox.Text = string.Empty;
    CostTextBox.Text = string.Empty;
    PriceTextBox.Text = string.Empty;
    ColourTextBox.Text = string.Empty;
    SizeTextBox.Text = string.Empty;
    QuantityTextBox.Text = string.Empty;
}

数据未从文本字段插入数据库

1 个答案: