[英]Couldn't save to MS Access database from C#
vith cmb 后面的值是一個組合框。 當我單擊保存按鈕時,它會引發錯誤。
我的代碼在這里:
cn.Open();
OleDbCommand command = new OleDbCommand();
command.Connection = cn;
command.CommandText = "insert into TblProductDetails(ProductID, ProductName, Category, Section, UOM, CostPrice, SellingPrice1, SellingPrice2, DiscountPercentage, DiscountAmount, MinimumPrice, Vendor, Stock) values ('" + txtProductID.Text + "','" + txtName.Text + "','" + category + "','" + section + "','" + uom + "','" + txtCostprice.Text + "','" + txtSellingPrice1.Text + "','" + txtSellingPrice2.Text + "','" + txtDiscountpercentage.Text + "','" + txtDiscountAmount.Text + "','" + txtMinimumPrice.Text + "','" + vendor + "','" + txtBeginingStock.Text + "')";
command.ExecuteNonQuery();
cn.Close();
它可以是很多東西。 請參閱史蒂夫的評論。 但是您還想檢查文本框中“ ' ”字符(撇號)的值,就好像文本框包含該字符一樣,這也可能導致語法問題,請查看 SQL 注入以獲取更多信息。 認為這值得一提。 你也可以使用 DataTableAdapter 來處理這種事情,或者實體框架只是為了清除一點(我會這樣做)。
System.Data.OleDb.OleDbConnection conn = new
System.Data.OleDb.OleDbConnection();
conn.ConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Your DataBasePath";
conn.Open();
System.Data.OleDb.OleDbCommand cmd = new System.Data.OleDb.OleDbCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.CommandText = "INSERT INTO TblProductDetails (ProductID, ProductName, Category, Section, UOM, CostPrice, SellingPrice1, SellingPrice2, DiscountPercentage, DiscountAmount, MinimumPrice, Vendor, Stock) VALUES(@ProductID, @ProductName, @Category, @Section, @UOM, @CostPrice, @SellingPrice1, @SellingPrice2, @DiscountPercentage, @DiscountAmount, @MinimumPrice, @Vendor, @Stock)";
cmd.Parameters.AddWithValue("@ProductID", comboBox1.Text);
cmd.Parameters.AddWithValue("@ProductName", textBox1.Text);
cmd.Parameters.AddWithValue("@Category", textBox2.Text);
cmd.Parameters.AddWithValue("@Section", textBox2.Text);
cmd.Parameters.AddWithValue("@UOM", textBox4.Text);
// continue Your Code its just example
cmd.Connection = conn;
cmd.ExecuteNonQuery();
conn.Close();
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