how to use increment or decrement button with text box in a

Question

hi frnds how to use increment or decrement button with text box in asp.net by csharp corner using plus or minus button..

Ranjit Powar · Answer

int value; if(int.tryParse(textBox1.Text, out value)) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value--; if(value==0) value=0; textBox1.Text=value.ToString();

anjali khan · Answer

i got it if (value <= 0)

anjali khan · Answer

now also taking same like negative values

anjali khan · Answer

// hi frnds // now i want in this code if i select the decrement value it is taking negative value also but dont want negative values

anjali khan · Answer

Hi Ranjith, thanks for the update.. this code is working properly.. thank u so much,,,

Ranjit Powar · Answer

int value; if(int.tryParse(textBox1.Tex t, out value )) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value++; textBox1.Text=value.ToString(); For decrement int value; if(int.tryParse(textBox1.Text, out value ) ) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value--; textBox1.Text=value.ToString();

anjali khan · Answer

hi Ranjit thanks for the update as on time but now i m getting error like Error 2 ) expected Error 4 ; expected Error 5 ; expected Error 7 ; expected Error 8 ; expected Error 10 ; expected Error 6 Invalid expression term ')' Error 1 Invalid expression term ',' Error 9 Invalid expression term 'else' Error 3 Invalid expression term 'out'

Ranjit Powar · Answer

Hi I checked the link. If there is no value in textbox then it is consider as 0. You can try this int value; if(int.tryParse(textBox1.Text),out value) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value++; textBox1.Text=value.ToString(); For decrement int value; if(int.tryParse(textBox1.Text),out value) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value--; textBox1.Text=value.ToString();

anjali khan · Answer

hi but in textbox should not there any value becz i m using this to reservation .. pl chk this link http://asp.syncfusion.com/demos/web/Dashboard/AirlineReservation.aspx so there is using increment or decrement..

Ranjit Powar · Answer

Try this In increment button click event int value; if(int.tryParse(textBox1.Text),out value) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value++; textBox1.Text=value.ToString(); For decrement int value; if(int.tryParse(textBox1.Text),out value) { value=Convert.ToInt32(textBox1.Text); } else { value=0; } value--; textBox1.Text=value.ToString(); If it helps you select it as correct answer.

Ranjit Powar · Answer

When you click on button there should be some integer value in textbox.

anjali khan · Answer

hi m getting error like Input string was not in a correct format. my code is like

Ranjit Powar · Answer

If you want to increment and decremt value in textbox then use below code In increment button click event int value=Convert.ToInt32(textBox1.Text); value++; textBox1.Text=value.ToString(); For decrement int value=Convert.ToInt32(textBox1.Text); value--; textBox1.Text=value.ToString(); If it helps you select it as correct answer.

how to use increment or decrement button with text box in a

Answers (13)