小编Dil*_*dra的帖子

我有一个按钮点击事件的以下代码,我为报告打开一个新的选项卡,我需要从后面的代码传递一个参数,

String classname = txt_classname.SelectedValue;
String teachername = "Some name";


string url = "Report_Classwise.aspx";
string s = "window.open('" + url + "', 'popup_window', 'width=300,height=100,left=100,top=100,resizable=yes');";
ClientScript.RegisterStartupScript(this.GetType(), "script", s, true);

我需要将classname&teachername传递给Report_Classwise.aspx页面,我已经尝试过设置

string url = "Report_Classwise.aspx?classname='"+classname+"'&teachername='"+teachername+"'";

但它没有用

我在我的一个程序中有以下IF条件,我设置条件来验证强制文本字段是否为空,如果是,则显示错误消息,但即使必填字段为空,仍然保存记录而不管必须填写.

if (!txt_teacherid.Equals(null) && !txt_teacherid.Equals("") && !txt_teacherfname.Equals(null) && !txt_teacherfname.Equals("") && !txt_teacherlname.Equals(null) && !txt_teacherlname.Equals("") && !txt_teacherdob.Equals(null) && !txt_teacherdob.Equals("") && !txt_teachernationality.Equals(null) && !txt_teachernationality.Equals("") && !txt_teacheraddress.Equals(null) && !txt_teacheraddress.Equals(""))
{
    String teacherid = txt_teacherid.Text.Trim();
    String teacherfname = txt_teacherfname.Text.Trim();
    String teacherlname = txt_teacherlname.Text.Trim();
    String teachergender = opt_gender.SelectedItem.Value.ToString();
    String teachercivilstatus = opt_civilstatus.SelectedItem.Value.ToString();
    String teacherdob = txt_teacherdob.Text.Trim();
    String teachernationality = txt_teachernationality.Text.Trim();
    String teacheraddress = txt_teacheraddress.Text.Trim();
    String teachercontactno = txt_teachercontactno.Text.Trim();
    String teacherqualification = txt_teacherqualification.Text.Trim();
    String teacherexperience = txt_teacherexperience.Text.Trim();
    String teacherjobtitle = txt_teacherjobtitle.Text.Trim();
    String teacherjoindate = txt_teacherjoindate.Text.Trim();
    String imgpath …

我需要在以下SELECT查询的结果中将"payment"表的"payment_status"列更新为"1",但在单个Query中.请帮我.

SELECT * FROM payments p
INNER JOIN invoice i
ON i.invoice_number = p.invoiceGRN_id
WHERE i.invoice_status = '2' AND i.payment_type = 'Credit'

我想从我的发票表中检索最大发票号,当我选择所有可以清楚地看到最大发票号为"10"的记录时,它返回以下内容.

select * from invoice

但是当我查询

select MAX(invoice_number) as maxinv from invoice

它返回"9".这是为什么？

我想打破一个其他条件,如果它有一个内部if条件,如果内部if条件内部变为如下,请建议我一个方法.

 if(condition1=true){

        }
    else if(condition2=true){

           if(condition3=true){

              do activity 1;
              //I want to break here if condition3 is true, without executing activity 2 & 3
            }

          do activity 2;
          do activity 3;

    }