Question

我正在尝试对会计系统进行编码，我应该在其中输入产品ID，产品名称和产品价格。之后，应将其存储在.accdb文件中

我的问题是，当我在产品ID中输入10位数以上时，datagridview给我一个错误，指出该值对于int32类型而言太大。

错误：

其他信息：对于一个广告而言，值太大或太小 Int32。无法将<6221060003181>存储在Item_Code列中。预期类型是Int32。

当我打开accdb文件时，我发现存储了数据；但是下次我打开表格时，它给了我这个错误！

public partial class Productentry : MetroFramework.Forms.MetroForm
{

    public OleDbConnection connection = new OleDbConnection();

    public Productentry()
    {
        InitializeComponent();
        connection.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:\Sama_Software\WindowsFormsApplication1\WindowsFormsApplication1\DB.accdb;Jet OLEDB:Database Password=**************";
    }

    private void Productentry_Load(object sender, EventArgs e)
    {
        ViewData();
        // TODO: This line of code loads data into the 'dBDataSet.Product' table. You can move, or remove it, as needed.
        this.productTableAdapter1.Fill(this.dBDataSet.Product);


        ViewData();
    }
    void ViewData()
    {

        OleDbDataAdapter da = new OleDbDataAdapter("select * from [Product]",connection);
        da.Fill(this.dBDataSet.Product);

    }
    private void bunifuButton4_Click(object sender, EventArgs e)
    {
        this.Close();
    }

    private void bunifuButton3_Click(object sender, EventArgs e)
    {
        OleDbDataAdapter da = new OleDbDataAdapter("INSERT INTO [Product] (Item_Code, Item_Name, Price) VALUES ('" + Pidn.Text + "','" + name.Text + "','" + price.Text + "')", connection);
        da.Fill(dBDataSet)
        ViewData();
        Pidn.Clear();
        name.Clear();
        price.Clear();
    }

    private void Cat_TextChange(object sender, EventArgs e)
    {

    }

    private void bunifuButton1_Click(object sender, EventArgs e)
    {
        OleDbDataAdapter da = new OleDbDataAdapter("UPDATE [Product] WHERE [Item_Code]=" + Pidn.Text + " SET [Item_Name]='" + name.Text + "',[Price]=" + price.Text + "", connection);
        da.Fill(dBDataSet);
        ViewData();
        Pidn.Clear();
        name.Clear();
        price.Clear();
    }

    private void bunifuButton4_Click_1(object sender, EventArgs e)
    {
        this.Close();
    }
    private void Pid_TextChange(object sender, EventArgs e)
    {
    }
}

}

Answer 1

将条形码存储为文本。

即使它是由数字构成的，它也不是数字，而是固定长度的代码，甚至可能有前导零。

尝试检索datagridview列值“ 15位数”时出现错误

1 个答案: