C# Access Database Update Syntax Error

Question

Is there something wrong with this query?

"UPDATE tb_EmployeeMasterList SET [EmployeeID] = " + txt_EmpId.Text +", [LastName] = '" + txt_LN.Text + "', [FirstName] = '" + txt_FN.Text + "', [MiddleName] = '" + txt_MN.Text + "', [PositionOrSkill] = '" + txt_PorS.Text + "', [BasicSalary] = " + txt_Basic.Text + ", [Allowance] = " + txt_Allow.Text + ", [Total] = " + total + ", [EPAproposedBonus] = " + txt_Bonus.Text + ", [Remarks] = '" + txt_Remarks.Text + "' WHERE ([LastName] = '" + LN + "' AND [FirstName] = '" + FN + "');"

I keep on Getting syntax error on that query alone.

Answer 1

There seems to be a pair of single quotes missing:

"UPDATE tb_EmployeeMasterList SET [EmployeeID] = " + txt_EmpId.Text +",

Should be:

"UPDATE tb_EmployeeMasterList SET [EmployeeID] = '" + txt_EmpId.Text +"', 

Answer 2

尝试在不带括号的情况下触发WHERE语句

"UPDATE tb_EmployeeMasterList SET [EmployeeID] = " + txt_EmpId.Text +", [LastName] = '" + txt_LN.Text + "', [FirstName] = '" + txt_FN.Text + "', [MiddleName] = '" + txt_MN.Text + "', [PositionOrSkill] = '" + txt_PorS.Text + "', [BasicSalary] = " + txt_Basic.Text + ", [Allowance] = " + txt_Allow.Text + ", [Total] = " + total + ", [EPAproposedBonus] = " + txt_Bonus.Text + ", [Remarks] = '" + txt_Remarks.Text + "' WHERE [LastName] = '" + LN + "' AND [FirstName] = '" + FN + "';"

Answer 3

如果为total ，则LN和FN值来自变量而不是文本框，则语法正常，但文本框然后在其后添加.Text，否则会出现语法错误。