Question

I will have a text box where user can enter 0-9999 . If the user enters 10 i would like to load a Form. This form will have some controls and buttons namely Save . If user enter data and click on save i would like to clear the fields and have to show that form again up to the number of times(as per i said 10) corresponding to the value entered by the user in the textbox.

Answer 1

instead of showing the form 0-9999 times, you could pass the value (0-9999) to the form, and clear the fields on that form for 0-9999 times after user click on save and then close it.

e.g:

//on main form:
int i = 0; 
//parse the textbox1.text to int and check the result:
if(!int.TryParse(textbox1.Text,out i)||i<0||i>9999)
{
  //incorrect int value 
  MessageBox.Show("Please enter a valid value");
}
else //correct int value
{
  subform mysub=new subform(i);
  subform.ShowDialog();
}
//on your subform:
int timebeforeclose=0;
public subform(int count)
{
  timebeforeclose=count;
}

private void btnSave_Click(object sender, EventArgs e)
{
  //1.save your data or whatever...
  //2.empty any fields you want..
  //update timebeforeclose:
  timebeforeclose--;
  //check the timebeforeclose:

  if(timebeforeclose==0)
  {
    this.Close(); //close this form when reaches the specified number.
  }      
}