图书管理系统(c语言)源代码.docx

privtteaidloginbtnClick(uijw:tsender,Ee,:Arcse)

i:(this.useracctxt.Text.Trim)=is.pswlxt.Text=)

MessageBox.Show(请输入您的用户名和密码!”,“提示!);

return;

try

stringsql;

sql=select*fromtb_userwhereuacc=*+this.useracctxt.Text+and

upsw=+this.pswtxt.Text+;

OleDbDataReaderdr=DBHelp.OleReader(sql);

dr.Read):

if(dr.HasRows)

[

uacc=this.useracctxt.Text;

upsw=this.pswtxt.Text;

uname=dr[uname].ToString();

usex=dr[usex].ToString();

upart=dr[upart].ToString();

uright=dr[uright].ToString);

MainFormaf=newMainForm(this);

this.Hide);

this.useracctxt.Clear):

this.pswtxt.Clear();

af.Show();

)

else

MessageBox.Show(账号或密码错误!”,“提示!);

this,useracctxt.Clear();

lr.s,pswtxt.Clear();

th:x,useracctxt.Focus();

ch(ExreFList:)

H…tgl:x.Show(数据库无法连接!,警告!);

priva:evoiHcancelbtnClick(ainjurtsender,.A:ge)

nli:at:n.Exit();

privetwvaidLoginFormClosing(dinjtrtsender,nCls.mgletttrgse)