在C＃代码后面的LIKE SQl查询中转义单引号

Question

I have a query that looks like this.

SELECT [ID], [First_Name], [Last_Name], FROM [Employees] WHERE First_Name LIKE 'Jo%'

But this does not work on C# code behind. How do I escape the first single quote after LIKE?

SqlDataAdapter da = new SqlDataAdapter("SELECT [ID], [First_Name], [Last_Name], FROM [Employees] WHERE First_Name  LIKE ' + @Search + '%'", cs);
da.SelectCommand.Parameters.AddWithValue("@Search",tbNameSearch.Text);

Answer 1

Your statement should be:

"SELECT [ID], [First_Name], [Last_Name], FROM [Employees] WHERE First_Name  LIKE @Search"

Then you can change the value of @Search:value:

da.SelectCommand.Parameters.AddWithValue("@Search",tbNameSearch.Text + "%");

Answer 2

只是：

 ...LIKE @Search + '%' ";

Answer 3

Try this:

"SELECT [ID], [First_Name], [Last_Name], FROM [Employees] WHERE First_Name LIKE '@Search%'"

The % might screw that up, I'm not sure. Try removing the % first, and if the query works, add it back in to see if anything breaks.