CODEWITHSUNDEEP
c#.netwpf
Dave
Dave

Reputation: 2576

Programmatically know which .NET textbox to use? Multiple Textboxes with number attached to the end

I have a game I'm making in .NET at the moment. Right now I have something like this for determining which textbox belongs to which player:

switch(player.ID) {
    case 1: storeRandPlayerInfo = textbox1.Text;
    break;
    case 2: storeRandPlayerInfo = textbox2.Text;
    break;
    case 3: storeRandPlayerInfo = textbox3.Text;
    break;
}

My question is, is there a way to do something like Windows.Textbox["textbox"+player.ID].Text; Know what i mean? I can't find anything online so I assume it's not possible but I just wanted to know.

Upvotes: 0

Views: 203

Answers (4)

Dave Cousineau
Dave Cousineau

Reputation: 13178

Personally I would use a dictionary; you are describing a mapping, and that's what dictionaries do best. You can do it either with your ID, or the objects themselves:

// using ID as the key
private readonly Dictionary<int, TextBox> mPlayerTextBoxes;

// ...or using object as the key
private readonly Dictionary<Player, TextBox> mPlayerTextBoxes;

// in form constructor, after InitializeComponent call:

// using ID as the key
mPlayerTextBoxes = new Dictionary<int, TextBox>
{
   { player1.ID, textbox1 },
   { player2.ID, textbox2 },
   { player3.ID, textbox3 }
};

// using object as the key
mPlayerTextBoxes = new Dictionary<Player, TextBox>
{
   { player1, textbox1 },
   { player2, textbox2 },
   { player3, textbox3 }
};

// then when you want a textbox, given a player:
// using ID    
TextBox textBox = mPlayerTextBoxes[player.ID];

// using object
TextBox textBox = mPlayerTextBoxes[player];

Upvotes: 0

Jason Larke
Jason Larke

Reputation: 5609

You can just use the indexing of "this.Controls" (point to note, "this.Controls" will only contain the top level controls on the form, controls within a groupBox for instance will be in a collection in "this.groupBox1.Controls", so index into that collection rather than "this.Controls")

    private TextBox getPlayersBox(int player)
    {
        string expected = "textBox" + player.ToString();
        if (this.Controls.ContainsKey(expected))
            return this.Controls[expected] as TextBox;
        else
            return null;
    }

Upvotes: 0

pabdulin
pabdulin

Reputation: 35235

Surely there is a way. One of them is:

// define and init
TextBox[] playerBoxes = new TextBox[] { textBox1, textBox2, textBox3 };

// use 
storeRandPlayerInfo = playerBoxes[player.ID - 1];

Upvotes: 4

TGH
TGH

Reputation: 39268

You can do something like this

private TextBox GetPlayerTextBox(int playerId)
        {
            string textBoxName = string.Format("TextBox{0}", playerId);
            return this.Controls.OfType<TextBox>().Where(t => t.Name == textBoxName).Single();
        }

Upvotes: 0

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