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POhow to pass data from a form to another form that is previously instantiated from any other form?
 

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  1. POhow to pass data from a form to another form that is previously instantiated from any other form?
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    <p>I have three forms(form1,form2,form3), my main form is form1, from that i opened form2 taking some data and i have an update button on form2 that will take me to form3, now i want that whatever user writes on form3 is updated to form2, how can i make it possible using c#.net?</p> <p>(i opened form2,form3 using showdialog() method)</p> <pre><code>//reference to form2 Form2 SecondaryForm = new Form2(mainForm);&lt;br/&gt; SecondaryForm.ShowDialog(); //in the constructor of Form2 save the reference of Form1 Form1 form1 = null Form2(Form1 mainForm) { form1 = mainForm; } //then instead of creating a new MainForm again just use reference of Form1 form1.updateText(data); this.Close() </code></pre> <p>i have used the above code but i am getting nullreference exception on <strong>form1.updateText(data);</strong></p>
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    1. USKing King
    1. USuser2748092
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. COshow your `updateText();` code
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      1. POhow to pass data from a form to another form that is previously instantiated from any other form?
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    2. COpublic void updateText(string txt){textbox1.text=txt;}
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      1. POhow to pass data from a form to another form that is previously instantiated from any other form?
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    3. COIs that all?. show the code in the method
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      1. POhow to pass data from a form to another form that is previously instantiated from any other form?
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