asp.net c# Multiple search from tables

Question

I want to make a search function but I need to search from 1 textbox against multiple columns. For example I have:

string select="Select * From tableName where(Name like'%" + texbox1.text.ToString() + "'";
sqldatasource1.selectcommand = select;

via that code I can only search in table Name. How can I extend this to work against many columns?

Sql database 2008 Thanks

Answer 1

I'm not sure if I understand your question correctly. Are you asking how to search over multiple columns? If so, your where-clause is simply:

where Column1 like '%'" + textbox1.text.ToString() + " OR Column2 like '%'" + textbox1.text.ToString(); // ... and so on

But please don't build your query string as shown since this exposes you to an SQL injection attack! Use named parameters instead.

Answer 2

u will find your answer in this link

http://blogs.lessthandot.com/index.php/DataMgmt/DataDesign/the-ten-most-asked-sql-server-questions--1#2

Answer 3

字符串查询=“从ProductDetails中选择*，其中ProductName类似于'” + SearchTextBox.Text +“％'” +“或ProductType类似于'” + SearchTextBox.Text +“％'”;