this 在当前上下文不可用？？？

[Xiao376720200]

namespace StudentGradeManage.UI
{
public partial class frmUsercx : Form
{
public frmUsercx()
{
InitializeComponent();
}

ctlUsercx objControl = new ctlUsercx();

string Userid = this..txtUserid.Text.Trim();
string Userpwd = this.cbxUserlevel.SelectedItem.ToString();

private void barButtonItem1_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
objControl.BingdingData(User, Userpwd, this);
}
}
}

这是代码，我想取窗体控件里的字符，怎么出错了？？求解！！

[vrhero]

类级只允许写声明语句...这是游戏规则...好好看书...

[Xiao376720200]

[Quote=引用 1 楼 vrhero 的回复:]
类级只允许写声明语句...这是游戏规则...好好看书...
[/Quote]
如何写，才可以在多个地方调用Userid和Userlevel呢

[caozping]

namespace StudentGradeManage.UI
{
public partial class frmUsercx : Form
{
public frmUsercx()
{
InitializeComponent();
}

ctlUsercx objControl = new ctlUsercx();

string Userid;
string Userpwd ;

private void barButtonItem1_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{

Userid = this..txtUserid.Text.Trim();

Userpwd = this.cbxUserlevel.SelectedItem.ToString();

objControl.BingdingData(User, Userpwd, this);
}
}
}

这样就可以了

[挨踢直男]

写成属姓

[vrhero]

用属性封装即可，不必多此一举...

另外，可能为null的值不要乱ToString...

public string Userpwd {
get{
return Convert.ToString(this.cbxUserlevel.SelectedItem);
}
}

[lufeng589674]

类、命名空间不能像这样写的。。。方法里面才行

[Xiao376720200]

明白，Thank!!