Using a LINQ variable in another method?

Question

In the code below, I am trying to assign the array Filepaths to the variable m_settings but Filepaths is not recognized outside the LINQ method. How can I store the content of FilePaths in a variable that i can use in the SolveInstance method?

public void ShowSettingsGui()
{
    var dialog = new OpenFileDialog()
    {
        Multiselect = true,
        Filter = "Data Sources (*.ini)|*.ini*|All Files|*.*"
    };
    if (dialog.ShowDialog() != DialogResult.OK) return;
    var paths = dialog.FileNames;
    var FilePaths = paths.ToDictionary(filePath => filePath, File.ReadAllText);
}

private string[] m_settings = Filepaths;  

protected override void SolveInstance(IGH_DataAccess DA)
{
    if (m_settings == null)
    {
        AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "You must declare some valid settings");
        return;
    }

    DA.SetData(0, m_settings);
}

Can you not just assign m_settings in the ShowSettingsGui method and use m_settings in SolveInstance? — Simon Whitehead
– Simon Whitehead, Commented Aug 13, 2012 at 1:17

timothyclifford · Accepted Answer · 2012-08-13 01:18:33Z

3

I could be reading into it too much but I don't think you need FilePaths, you can just set m_settings directly...

private Dictionary<string, string> m_settings;  

public void ShowSettingsGui()
{
    var dialog = new OpenFileDialog()
    {
        Multiselect = true,
        Filter = "Data Sources (*.ini)|*.ini*|All Files|*.*"
    };
    if (dialog.ShowDialog() != DialogResult.OK) return;
    var paths = dialog.FileNames;
    m_settings = paths.ToDictionary(filePath => filePath, File.ReadAllText);
}

protected override void SolveInstance(IGH_DataAccess DA)
{
    if (m_settings == null)
    {
        AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "You must declare some valid settings");
        return;
    }

    DA.SetData(0, m_settings);
}

You also need to ensure SolveInstance is called after ShowSettingsGui, otherwise m_settings will always be null

answered Aug 13, 2012 at 1:18

timothyclifford

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3 Comments

Arthur Mamou-Mani Over a year ago

Thanks a lot, do you know why I get the following output and not the dictionnary in itself? '{0} 0. System.Collections.Generic.Dictionary`2[System.String,System.String]'

Adam Over a year ago

@arthurmani, you are only after a single file. Don't use a dictionary. just do string m_settings; and m_settings = File.ReadAllText(dialog.FileName);. The output is like that because that's what Dictionary.ToString returns.

Adam Over a year ago

@arthurmani I've updated my previous answer to show you how.

Anas · Accepted Answer · 2012-08-13 01:23:14Z

1

public void ShowSettingsGui()
{
    var dialog = new OpenFileDialog()
    {
        Multiselect = true,
        Filter = "Data Sources (*.ini)|*.ini*|All Files|*.*"
    };
    if (dialog.ShowDialog() != DialogResult.OK) return;
    var paths = dialog.FileNames;
    var FilePaths = paths.ToDictionary(filePath => filePath, File.ReadAllText);

    // You need to add this
    this.m_settings  = FilePaths;
}

// You also need to change the type of m_settings from string[] to Dictionary<string, string>
private Dictionary<string, string> m_settings = Filepaths;  

protected override void SolveInstance(IGH_DataAccess DA)
{
    if (m_settings == null)
    {
        AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "You must declare some valid settings");
        return;
    }

    DA.SetData(0, m_settings);
}

edited Aug 13, 2012 at 1:23

answered Aug 13, 2012 at 1:17

Anas

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2 Comments

Arthur Mamou-Mani Over a year ago

Thanks a lot but I get the following error:Cannot implicitly convert type 'System.Collections.Generic.Dictionary<string,string>' to 'string[]' and The name 'Filepaths' does not exist in the current context

Simon Whitehead Over a year ago

You've got a floating member declared in between the methods. Firstly, move that to the top. Once you do that, you'll realise that Filepaths doesn't exist at that level and so assigning m_settings to Filepaths is invalid.

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