使用 ComboBox 和 TextBox 过滤搜索 VB.net

Question

我有一个带有 MySQL 的 vb.net 应用程序我想搜索数据库并使用组合框和文本框过滤结果

        SQL = "select * FROM duty where '" & ComboBox3.Text & "' = '" & TextBox15.Text & "' "

Answer 1

Aside from the SQL injection issues,

Add % wildcard.

SQL = "select * FROM duty where '" & ComboBox3.Text & "' = '%" & TextBox15.Text & "%' "

Answer 2

If you are searching for a string, use a LIKE keyword on your SELECT statement.

Example:

SQL = "SELECT * FROM duty WHERE '" & ComboBox3.Text & "' LIKE '" & TextBox15.Text & "%';"