C# : I can't set the value using in getset in spacial button

Question

2.00/5 (3 votes)

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Hello all, I am getting error when I trying to set value using get set method it retun null here, and from other button it is working fine. am i missing some thing? please help

C#

private void button7_Click(object sender, EventArgs e)
        {
             OpenFD.Title = "Select Files";
            OpenFD.Filter = "Jpg|*.jpg|Jpge|*.jpge|Gif|*.gif";
            OpenFD.FileName = null;
            string fileName;
            if (OpenFD.ShowDialog() != DialogResult.Cancel)
            {
                querybuilder qu = new querybuilder();
                fileName = OpenFD.FileName;
          // setting the value here for getset.big
                getset.big = fileName;
                Object refmissing = System.Reflection.Missing.Value;
                try
                {
                    pictureBox2.Load(fileName);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Error" + ex.Message.ToString());
                }
            }
        }

class for setting big is

C#

class getset
{
    public static string photo;
    public static string big
    {
        get { return photo; }
        set { photo = value; }
    }
}

and when I am trying to give out put then it return null while from other button when i am trying to set the value it work fine can any one help me please

C#

if (getset.big != null)
                {
                    // trying to displaying here
                    MessageBox.Show(getset.big);
                }
                else
                {
                    MessageBox.Show("Problem is in Image");
                }

other button code

C#

private void button6_Click(object sender, EventArgs e)
        {
// here it has been set
            getset.big = "fddfdf";
        }

Posted 8-Aug-12 8:19am

Kislay Raj

Updated 8-Aug-12 8:46am

v2

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Comments

[no name] 8-Aug-12 14:23pm

After all of this you left out the most crucial bit of information.... what is the error message?

Kislay Raj 8-Aug-12 14:28pm

no error message infact when I try to load photo and same function I want to set the value using get set method then result I am getting null while when I am trying to set from other button it will set and I can see the value

[no name] 8-Aug-12 14:35pm

So when you try and get the value does it in fact have a value to get? Have you set photo to be some default value? Or are you trying to read the value before any value is set?

Kislay Raj 8-Aug-12 14:40pm

I have set the value first and try to read

[no name] 8-Aug-12 15:13pm

Check to see if fileName = OpenFD.FileName; is actually returning a value.

Kislay Raj 8-Aug-12 23:56pm

ya it is returning value so that I can see/ load image sucessfully but problem in setting values

Sergey Alexandrovich Kryukov 8-Aug-12 14:41pm

Tag the application type of UI library you use: WPF? Forms? Silverlight? ASP.NET? what?
--SA

Kislay Raj 8-Aug-12 14:45pm

Windowform ok

Sergey Alexandrovich Kryukov 8-Aug-12 15:13pm

Thank you.
--SA

Sergey Alexandrovich Kryukov 8-Aug-12 15:18pm

This hardly can work: you don't show essential code. Why the class getset, purpose of it. You just show your check for null, don't show how you initialize the variable...
It needs some minimalistic but complete code sample, not your present code. By the way, chances are, you can find the problem yourself while preparing the sample; it often happens.
--SA

Kislay Raj 8-Aug-12 15:22pm

the project is too big to post over internet. ya I am trying to find my self and will try to see other option to

Sergey Alexandrovich Kryukov 8-Aug-12 15:26pm

Exactly. Pay attention: above, I suggested that you should develop a special code sample, specially for asking a question, focusing only on the isolated problem.
--SA

Kislay Raj 8-Aug-12 15:32pm

ya thanks for suggestion my friend

2 solutions

Solution 1

Ok, the helper class (getset.cs) is:

C#

using System;

namespace WindowsFormsApplication2
{
    public class getset
    {
        public string photo;
        public string big
        {
            get { return photo; }
            set { photo = value; }
        }
    }
}

The Form1.cs c# code is (button1 reproduces your button7):

C#

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            getset setter = new getset();

            setter.big = "hi!";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFD.Title = "Select Files";
            OpenFD.Filter = "Jpg|*.jpg|Jpge|*.jpge|Gif|*.gif";
            OpenFD.FileName = null;
            string fileName;
            DialogResult result = OpenFD.ShowDialog();
            if (result == DialogResult.Yes || result== System.Windows.Forms.DialogResult.OK)
            {
                //querybuilder qu = new querybuilder();
                fileName = OpenFD.FileName;
                // setting the value here for getset.big
                getset setter = new getset();
                setter.big = fileName;

                try
                {
                    pictureBox2.Load(setter.big);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("Error" + ex.Message.ToString());
                }
            }
        }
    }
}

Hope it helps.

Posted 8-Aug-12 8:29am

Christian Amado

Updated 8-Aug-12 9:41am

v4

Comments

Kislay Raj 8-Aug-12 14:34pm

No I have tried it, it's not working... look my question It is set from other button successfully but it is problem in setting it in button7 where I want to load picture to. I think I am missing something and I know one thing is that error is in Button7 in above code

Christian Amado 8-Aug-12 14:36pm

I don't see any error. Add public in front of your class declaration.

Kislay Raj 8-Aug-12 14:43pm

All classes and function I have to work with get and set I have publish and you can see above that no other function I have used which is not publish

Christian Amado 8-Aug-12 14:46pm

You wrote: class getset. Must be: public class getset. And remove static key word. You need objects (instance of a class not a static class for this).

Kislay Raj 8-Aug-12 14:48pm

I have tried both and it is in same file so I think it is not matter. one thing I would like to tell you that error is not in class getset it is in button7 which I couldn't find my friend

Christian Amado 8-Aug-12 14:50pm

Let me reproduce it. I'll answer you in a moment.

Kislay Raj 8-Aug-12 14:52pm

thank you very much I am waiting for answer

Christian Amado 8-Aug-12 15:12pm

It's working for me! The image is loaded =)

Kislay Raj 8-Aug-12 15:38pm

images has been loaded but can't set the value

Kislay Raj 8-Aug-12 15:28pm

thanks but it's also not working both same thing. I had tried it before, having seen your answer I have tried it once again but it's not working

Christian Amado 8-Aug-12 15:34pm

May be you have another issues different.

Kislay Raj 8-Aug-12 15:39pm

may be but my question is for setting value not for loading image. in my code it has loaded to but didn't set

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Kislay Raj · Accepted Answer · 2012-08-08T19:37:00

Solution 2

sorry all it was a mistake that I am using twice button and setting on other and trying to get from other

Posted 8-Aug-12 19:37pm

Kislay Raj