dynamic - C# dynamically change the value -


i pretty new @ c# , had make primitive neuron app. works pretty good, except values don't update dynamically.

the problem when change values in numericupdown want current function(selected in combobox) recalculate , change value in richtextbox(the result box)

i sure it's event thing, couldn't find anywhere.

private void combobox1_selectedindexchanged(object sender, eventargs e) {     if(combobox1.text=="suma")     {         decimal s = 0;         decimal temp;         (int = 0; < numericupdown1.value; i++)         {             var currentnumupdown =   this.panel1.controls["numericupdown" + (100 + i).tostring()] numericupdown;             var currentnumupdown2 = this.panel1.controls["numericupdown" + (200 + i).tostring()] numericupdown;             temp = currentnumupdown.value * currentnumupdown2.value;             s = s + temp;         }         richtextbox1.text = s.tostring();         fin = s;     }     if (combobox1.text == "produs")     {         decimal p = 1;         decimal temp;         (int = 0; < numericupdown1.value; i++)         {             var currentnumupdown = this.panel1.controls["numericupdown" + (100 + i).tostring()] numericupdown;             var currentnumupdown2 = this.panel1.controls["numericupdown" + (200 + i).tostring()] numericupdown;             temp = currentnumupdown.value * currentnumupdown2.value;             p = p * temp;         }         richtextbox1.text = p.tostring();         fin = p;     }     if (combobox1.text == "minim")     {         decimal minim = 2;         decimal temp;         (int = 0; < numericupdown1.value; i++)         {             var currentnumupdown = this.panel1.controls["numericupdown" + (100 + i).tostring()] numericupdown;             var currentnumupdown2 = this.panel1.controls["numericupdown" + (200 + i).tostring()] numericupdown;             temp = currentnumupdown.value * currentnumupdown2.value;             if (minim > temp)                 minim = temp;         }         richtextbox1.text = minim.tostring();         fin = minim;     }     if (combobox1.text == "maxim")     {         decimal maxim = -2;         decimal temp;         (int = 0; < numericupdown1.value; i++)         {             var currentnumupdown = this.panel1.controls["numericupdown" + (100 + i).tostring()] numericupdown;             var currentnumupdown2 = this.panel1.controls["numericupdown" + (200 + i).tostring()] numericupdown;             temp = currentnumupdown.value * currentnumupdown2.value;             if (maxim < temp)                 maxim = temp;         }         richtextbox1.text = maxim.tostring();         fin = maxim;     } }

i can provide more code if need it. thank in advance!

you need event numericupdown recalculate value.

try adding these events:

currentnumupdown.valuechanged += new eventhandler(combobox1_selectedindexchanged);  currentnumupdown2.valuechanged += new eventhandler(combobox1_selectedindexchanged);

note object sender , eventargs e differ in method, depending on event called method.


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