这条过滤语名如何写
1) string strRowFilter = " ";

2) strRowFilter = "(姓名 like '% " + txt1.Text.Trim() + "% ') and 日期 like '% " +txt2.Text.Trim() + "% ') ";

3) tempTable.DefaultView.RowFilter = strRowFilter;

由于[日期]是一个整形值而不能使用[%]
问怎样把[日期]转换为字符形

[解决办法]
你原来写的括号不对，下面两种都可以：

strRowFilter = "(姓名 like '% " + txt1.Text.Trim() + "% ') and (日期 like '% " +txt2.Text.Trim() + "% ') ";

strRowFilter = "姓名 like '% " + txt1.Text.Trim() + "% ' and 日期 like '% " +txt2.Text.Trim() + "% ' ";
[解决办法]
strRowFilter = "姓名 like '% " + txt1.Text.Trim() + "% ' and 日期 like '% " +txt2.Text.Trim() + "% ' ";

[解决办法]
CONVERT(INT, txt2.Text.Trim())试试