Display (Show) Power Shell Command output in ASP.Net TextBox using C# and VB.Net

nilupul4...

SOLVED CLOSED ACTIVE ANSWERED
User: nilupul4242
Posted: on May 30, 2021 11:40 PM
Forum: ASP.Net Web Forms
Answer: 1
Views: 9379
Sample Code: Download

Power Shell Command Output not displayed in ASP.Net Textbox

I create ASP.Net webform application using MS VS 2015. According to code, I install System.Management.Automation library from NuGet packages.

And I'm trying to display my MQTT service command output in asp textbox. After click on ExecuteCode button, Code not showing error but output not showing.

page showing loading symbol in top corner of tab continuously. PowerShell command works at PowerShell console IDE as well.

I hope you solutions for that.

My PowerShell Command as:

mosquitto_sub -h 192.168.8.184 -p 1883 -t "topic"

protected void ExecuteCode_Click(object sender, EventArgs e)
{
    // Clean the Result TextBox
    ResultBox.Text = string.Empty;

    // Initialize PowerShell engine
    var shell = PowerShell.Create();

    // Add the script to the PowerShell object
    shell.Commands.AddScript(Input.Text);

    // Execute the script
    var results = shell.Invoke();

    // display results, with BaseObject converted to string
    // Note : use |out-string for console-like output
    if (results.Count > 0)
    {
        // We use a string builder ton create our result text
        var builder = new StringBuilder();

        foreach (var psObject in results)
        {
            // Convert the Base Object to a string and append it to the string builder.
            // Add \r\n for line breaks
            builder.Append(psObject.BaseObject.ToString() + "\r\n");
        }

        // Encode the string in HTML (prevent security issue with 'dangerous' caracters like < >
        ResultBox.Text = Server.HtmlEncode(builder.ToString());
    }
}

Download FREE API for Word, Excel and PDF in ASP.Net

dharmend...

0 2

Reply
ANSWER
User: dharmendr
Replied: on May 31, 2021 04:25 AM
Report

Hi nilupul4242,

Your codeis working.

You need to verify the PowerShell Command. It might have not returning any result.

Refer below sample.

HTML

<table>
    <tr>
        <td>
            <asp:TextBox ID="Input" runat="server" TextMode="MultiLine" Width="433px" Height="73px"></asp:TextBox>
            <br />
            <asp:Button ID="ExecuteCode" runat="server" Text="Execute" Width="200" OnClick="ExecuteCode_Click" />
        </td>
    </tr>
    <tr>
        <td>
            <h3>Result</h3>
        </td>
    </tr>
    <tr>
        <td>
            <asp:TextBox ID="ResultBox" TextMode="MultiLine" Width="433px" Height="200" runat="server"></asp:TextBox>
        </td>
    </tr>
</table>

Namespaces

using System.Management.Automation;
using System.Text;

VB.Net

Imports System.Management.Automation
Imports System.Text

Code

protected void ExecuteCode_Click(object sender, EventArgs e)
{
    ResultBox.Text = string.Empty;
    var shell = PowerShell.Create();
    shell.Commands.AddScript(Input.Text);
    var results = shell.Invoke();
    if (results.Count > 0)
    {
        var builder = new StringBuilder();

        foreach (var psObject in results)
        {
            builder.Append(psObject.BaseObject.ToString() + "\r\n");
        }
        ResultBox.Text = Server.HtmlEncode(builder.ToString());
    }
}

VB.Net

Protected Sub ExecuteCode_Click(ByVal sender As Object, ByVal e As EventArgs)
    ResultBox.Text = String.Empty
    Dim shell = PowerShell.Create()
    shell.Commands.AddScript(Input.Text)
    Dim results = shell.Invoke()
    If results.Count > 0 Then
        Dim builder = New StringBuilder()
        For Each psObject In results
            builder.Append(psObject.BaseObject.ToString() & vbCrLf)
        Next
        ResultBox.Text = Server.HtmlEncode(builder.ToString())
    End If
End Sub

Screenshot

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

Display (Show) Power Shell Command output in ASP.Net TextBox using C# and VB.Net

Company

Explore

Follow us

Contact Us