求清华同方c#连接 kbase .net 组件

答：C4H8

解决方案：直接修剪法

假设下式CXHY的烃，写根据主题的已知条件的烃的燃烧反应，下面的化学方程式：

CXHY + 5O2 = 2CO2 + 2CO + 4H2O（相同的温度和压力下的体积比的比率的物质的量是相等的）

根据原子养护可用，x = 4时，为y = 8，烃的通式C4H8。

给你个例子，照着改改就可以用的

#region 多级别树形导航的处理，绑定第一层

private void PopulateCategories(string strTableName)

{

thisTVMenuNodesClear();

try

{

string strSQL = "select from " + strTableName + " where SYS_FLD_CLASS_GRADE = 1";

KBaseServerDAL kal = new KBaseServerDAL();

RecordSet rs = kalGetDataSetBySQL(strSQL);

if (rs != null && rsGetCount() > 0)

{

for (int i = 0; i < rsGetCount(); i++)

{

//string strField = rsGetValue("SYS_FLD_CLASS_NAME");

TreeNode NewNode = new TreeNode("<a href = " + thisTextBox_PageText + "sysCode=" + rsGetValue("SYS_FLD_CLASS_NAME")ToString() + ">" + rsGetValue("SYS_FLD_CLASS_NAME")ToString() + "</a>", "" + rsGetValue("SYS_FLD_SYS_CODE")ToString() + "," + rsGetValue("SYS_FLD_CLASS_GRADE")ToString() + "");

NewNodePopulateOnDemand = true;

thisTVMenuNodesAdd(NewNode);

NewNodeCollapseAll();

rsMoveNext();

}

}

kalDisconnectServer();

}

catch

{

thisLabel_TextText = "数据库连接有误，请检查配置。";

}

}

#endregion

#region 多级别树形导航的处理，单击树节点时的处理函数

protected void TVMenu_TreeNodeExpanded(object sender, TreeNodeEventArgs e)

{

try

{

//防止重复填充节点

if (eNodeChildNodesCount > 0)

return;

string[] str = eNodeValueSplit(',');

string strSysCode = str[0]ToString();

string strGrade = "";

strGrade = ConvertToString((ConvertToInt32(str[1]) + 1));

string strSQL = "select from " + thisTextBox6TextTrim() + " where SYS_FLD_CLASS_GRADE = " + strGrade + " and SYS_FLD_SYS_CODE = '" + strSysCode + "'";

KBaseServerDAL kal = new KBaseServerDAL();

RecordSet rs = kalGetDataSetBySQL(strSQL);

if (rs != null && rsGetCount() > 0)

{

for (int i = 0; i < rsGetCount(); i++)

{

string strField = rsGetValue("SYS_FLD_CLASS_NAME");

TreeNode NewNode = new TreeNode("<a href = " + thisTextBox_PageText + "sysCode=" + rsGetValue("SYS_FLD_CLASS_NAME")ToString() + ">" + rsGetValue("SYS_FLD_CLASS_NAME")ToString() + "</a>", "" + rsGetValue("SYS_FLD_SYS_CODE")ToString() + "," + rsGetValue("SYS_FLD_CLASS_GRADE")ToString() + "");

NewNodePopulateOnDemand = true;

eNodeChildNodesAdd(NewNode);

NewNodeCollapseAll();

rsMoveNext();

}

}

kalDisconnectServer();

}

catch

{

thisLabel_TextText = "数据库连接有误，请检查配置。";

}

}

#endregion

1、需要配置安装VNC，然后通过VNC连接

2、安装和配置VNC

① 安装vnc

# yum install -y tigervnc-server tigervnc-server-module libXfont pixman xterm xorg-x11-twm 安装vnc及字体库

# chkconfig vncserver on 设置开机自动启动

②VNC配置

修改 /etc/sysconfig/vncservers 文件，添加以下内容

# The VNCSERVERS variable is a list of display:user pairs

#

# Uncomment the lines below to start a VNC server on display :2

# as my 'myusername' (adjust this to your own) You will also

# need to set a VNC password; run 'man vncpasswd' to see how

# to do that

#

# DO NOT RUN THIS SERVICE if your local area network is

# untrusted! For a secure way of using VNC, see this URL:

# >

1、需要配置安装VNC，然后通过VNC连接

2、安装和配置VNC

① 安装vnc

# yum install -y  tigervnc-server tigervnc-server-module libXfont pixman xterm xorg-x11-twm   安装vnc及字体库

# chkconfig  vncserver on      设置开机自动启动

②VNC配置

修改 /etc/sysconfig/vncservers 文件，添加以下内容

# The VNCSERVERS variable is a list of display:user pairs

#

# Uncomment the lines below to start a VNC server on display :2

# as my 'myusername' (adjust this to your own)  You will also

# need to set a VNC password; run 'man vncpasswd' to see how

# to do that

#

# DO NOT RUN THIS SERVICE if your local area network is

# untrusted!  For a secure way of using VNC, see this URL:

# >

# Use "-nolisten tcp" to prevent X connections to your VNC server via TCP

# Use "-localhost" to prevent remote VNC clients connecting except when

# doing so through a secure tunnel  See the "-via" option in the

# `man vncviewer' manual page

# VNCSERVERS="2:myusername"

# VNCSERVERARGS[2]="-geometry 800x600 -nolisten tcp -localhost"

VNCSERVERS="1:root"

VNCSERVERARGS[1]="-geometry 1024x768 -nolisten tcp -depth 24"

# -alwaysshared代表允许多用户同时登录 -depth代为色深，参数有8,16,24,32

#红色为新增内容

③ 设置VNC密码

# vncpasswd

Password:

Verify:

连续两次输入同样的密码

设置的密码保存在  /root/vnc/passwd

④ 修改防火墙配置，修改/etc/sysconfig/iptables

# vi /etc/sysconfig/iptables    #编辑，添加以下代码，开启5901、5902端口

-A INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 5902 -j ACCEPT

:wq! 保存，退出

service iptables restart   # 重启

⑤使用VNC连接CentOS主机

直接打开VNC，输入IP地址，冒号后面的1代表桌面号，这个要根据你的配置文件定义的桌面号

3、通过vnc登陆后，切换到oracle用户下面，即可进入到oracle的图形配置数据库界面

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