Get Precision for Text Value

[traiduong014969]

Hi all, 

Recently, I how to learn get Coordinate value from click by mouse. However, the value that i receive has many number behind "." . So I want to get a number that precision is ".00". For example Point 1 (5.23, 6.45, 5,77)

NOT ((5.23434645, 6.45463463456, 5.77xxx-xxxxxxxx). You can see the snapshot below:

Someone can help me edit again this code

Thank you !

[CommandMethod("11GetPoint")]
        public void 11GetPoint()
        {
            Editor ed = AcAp.DocumentManager.MdiActiveDocument.Editor;
            PromptPointOptions pr = new PromptPointOptions("Click mouse to get point");
            pr.AllowNone = true;
            pr.AllowArbitraryInput = true;   
            PromptPointResult kq = ed.GetPoint(pr);

            if (kq.Status != PromptStatus.OK) return;
            pr.BasePoint = kq.Value;
            pr.UseBasePoint = true;
            
            PromptResult kq1 = ed.GetPoint(pr);
        
            if (kq1.Status != PromptStatus.OK) return;
            
            ed.WriteMessage("\np1 = " + kq.Value.ToString() + "p2 = " + kq1.ToString());


        }

[Jeff_M · Accepted solution]

Use the Fixed-point formatting: ToString("F2")

See THIS for more on string formatting.

[_gile · Accepted solution]

Hi,

The Point3d structure implements IFormatable so you can pass a format to the ToString method (this requires to also pass a FormatProvider)

ed.WriteMessage("\np1 = " 
    + kq.Value.ToString("0.00", CultureInfo.CurrentCulture) 
    + "p2 = " 
    + kq1.Value.ToString("0.00", CultureInfo.CurrentCulture));

This can be simplified using the overload of Editor.WriteMessage method which takes a params object[] argument(s).

ed.WriteMessage("\np1 = {0:0.00} p2 = {1:0.00}", kq.Value, kq1.Value);

Or the (not so) new string interpolation using $.

ed.WriteMessage($"\np1 = {kq.Value:0.00} p2 = {kq1.Value:0.00}");

[traiduong014969]

Thanh you @_gile, @Jeff_M .

This working fine.