c# 将 WMI 输出发送到文本框 Web 控件
本文关键字:文本 Web 控件 WMI 输出 出发 | 更新日期: 2023-09-27 18:35:34
我把这个 c# asp 代码隐藏放在一起,从服务器中提取 WMI 信息。
拉取 WMI 信息时,代码似乎有效。
当我将 WMI 数据输出到文本文件时,一切正常。
问题:当我尝试将 WMI 数据输出到 asp/web 窗体中的文本框控件中时,它只显示最后一个 WMI 对象,而不是显示集合中的所有对象。
例如:我的 WMI 查询从服务器中提取硬盘驱动器信息。 服务器有 3 个硬盘驱动器(驱动器 C、D、E)。
-
WMI 输出到文本文件显示来自所有 3 个硬盘驱动器(驱动器 C、D、E)的信息。
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我的 texbox Web 控件的 WMI 输出仅显示列表中最后一个硬盘驱动器(驱动器 E)的信息。
我的 foreach 循环有问题吗?我是否为此类项目使用了错误类型的 Web 控件?
我不确定我做错了什么/我不明白什么。
提前感谢您的任何和所有教育和帮助!
当前代码:
public void getWMIdata(string query)
{
ConnectionOptions co = new ConnectionOptions();
co.EnablePrivileges = true;
co.Impersonation = ImpersonationLevel.Impersonate;
co.Username = TextBox2_userID.Text;
co.Password = TextBox3_password.Text;
string host = TextBox1_serverName.Text;
string wmiNameSpace = @"root'cimv2";
ManagementScope scope = new ManagementScope(string.Format(@"''{0}'{1}", host, wmiNameSpace), co);
try
{
ObjectQuery objquery = new ObjectQuery(query);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, objquery);
ManagementObjectCollection queryCollection = searcher.Get();
foreach (ManagementObject queryObj in queryCollection)
{
////convert free disk space size from bytes to GB's
double fdsbytes = Convert.ToDouble(queryObj["FreeSpace"].ToString());
double fdsGB = Math.Round((fdsbytes / Math.Pow(1024, 3)), 2);
string fdsFinal = @"Free Disk Space: " + Convert.ToString(fdsGB) + @"GB";
////convert total disk drive size from bytes to GB's
double dsbytes = Convert.ToDouble(queryObj["Size"].ToString());
double dsGB = Math.Round((dsbytes / Math.Pow(1024, 3)), 2);
string dsFinal = @"Disk Drive Size: " + Convert.ToString(dsGB) + @"GB";
////% free disk space
double a = Math.Round((100 * (fdsGB / dsGB)), 2);
string percentfreespace = @"% Free Space: " + Convert.ToString(a) + @"GB";
string name = @"Drive Name: " + queryObj["Name"].ToString();
string description = @"Drive Description: " + queryObj["Description"].ToString();
TextBox1_wmiOutput.Text = fdsFinal + Environment.NewLine + dsFinal + Environment.NewLine + percentfreespace + Environment.NewLine + name + Environment.NewLine + description + Environment.NewLine + Environment.NewLine;
}
}
catch (ManagementException ex)
{
Label3_wmiErrorMesage.Text = @"Error Message: " + ex.Message.ToString();
}
}
发生这种情况的原因是因为你正在写前一个(你只是看不到它,因为它发生得太快了)。
相反,你应该在你的foreach循环之外创建一个变量,(就像我在下面显示的那样)
public void getWMIdata(string query)
{
ConnectionOptions co = new ConnectionOptions();
co.EnablePrivileges = true;
co.Impersonation = ImpersonationLevel.Impersonate;
co.Username = TextBox2_userID.Text;
co.Password = TextBox3_password.Text;
string host = TextBox1_serverName.Text;
string wmiNameSpace = @"root'cimv2";
ManagementScope scope = new ManagementScope(string.Format(@"''{0}'{1}", host, wmiNameSpace), co);
try
{
ObjectQuery objquery = new ObjectQuery(query);
ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, objquery);
ManagementObjectCollection queryCollection = searcher.Get();
string displayedText = ""; // Here
foreach (ManagementObject queryObj in queryCollection)
{
////convert free disk space size from bytes to GB's
double fdsbytes = Convert.ToDouble(queryObj["FreeSpace"].ToString());
double fdsGB = Math.Round((fdsbytes / Math.Pow(1024, 3)), 2);
string fdsFinal = @"Free Disk Space: " + Convert.ToString(fdsGB) + @"GB";
////convert total disk drive size from bytes to GB's
double dsbytes = Convert.ToDouble(queryObj["Size"].ToString());
double dsGB = Math.Round((dsbytes / Math.Pow(1024, 3)), 2);
string dsFinal = @"Disk Drive Size: " + Convert.ToString(dsGB) + @"GB";
////% free disk space
double a = Math.Round((100 * (fdsGB / dsGB)), 2);
string percentfreespace = @"% Free Space: " + Convert.ToString(a) + @"GB";
string name = @"Drive Name: " + queryObj["Name"].ToString();
string description = @"Drive Description: " + queryObj["Description"].ToString();
// add this to the text variable to be displayed
displayedText += fdsFinal + Environment.NewLine + dsFinal + Environment.NewLine + percentfreespace + Environment.NewLine + name + Environment.NewLine + description + Environment.NewLine + Environment.NewLine;
}
// set text to be displayed
TextBox1_wmiOutput.Text = displayedText;
}
catch (ManagementException ex)
{
Label3_wmiErrorMesage.Text = @"Error Message: " + ex.Message.ToString();
}
}