text box color change when click the combobox

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SQL-Server-2005

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Can any body help me to solve this
when i select a item from combobox how can i change the back color of my text box(used to show quantity) when the quantity became less than 5 .

Posted 2-Feb-11 19:55pm

sevenbell

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**JF2015** · Answer 1 · 2011-02-02T19:57:00

Solution 1

That' basically the same as my previous answer: (quantity is taken from the textBox, but can also be taken from the combobox by replacing textBox2.Text with comboBox1.SelectedItem.ToString())

C#

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
  int quantity = 0;
  if (!Int32.TryParse(textBox2.Text, out quantity))
  {
    textBox2.BackColor = Color.Red;
    return;
  }
  if (quantity < 5)
    textBox2.BackColor = Color.Green;
  else
    textBox2.BackColor = Color.White;
}

Posted 2-Feb-11 19:57pm

JF2015

Updated 2-Feb-11 19:59pm

v2

Comments

sevenbell 3-Feb-11 3:09am

its not working .

JF2015 3-Feb-11 3:15am

If that is not working, you need to be more specific in what you are trying to achieve. You could also show us some code and tell us what exactly is not working.

JF2015 3-Feb-11 3:28am

This code does not make a lot of sense. I don't understand why you loop over each datarow in your table since you overwrite the content of the textboxes (3 and 18) with the datarow values. You need to be more specific in telling us what you want to achieve. What do you want to be displayed in the textboxes?

JF2015 3-Feb-11 3:46am

But that doesn't make sense if you overwrite the textBox18.Text and textBox3.Text values in a loop.

JF2015 3-Feb-11 4:23am

If you loop through the datarows, it does not make sense to add each rows values to a textBox. You should use a listview or a gridview instead.

Sergey Alexandrovich Kryukov 3-Feb-11 3:11am

A 5, but I already saw nearly identical question (and -- in comment -- advised to use 3-rd color for failed TryParse). A gang of lazy students having the same assignments?
--SA

sevenbell 3-Feb-11 4:26am

Sakryukov not i am too lazy i am just beginner in this failed so i have such doubt . and i already tried it in combobox property before asking to the author. ok

Sergey Alexandrovich Kryukov 4-Feb-11 2:33am

Well, I did not want to hurt your feeling, but I'm just looking at the facts, not anything else. Let see: You should do some reading, Web search, elaborate shortest possible code, it you see problems, post the code, spell check your English text, use proper typographic (correct text is politeness, I'm also not an English speaker, so don't tell me you can't). Being a beginner is a good decent busyness, but - a hard work. Everyone can say "I'm good, not lazy, or what not", but proof it with action (as other do, by the way).

Now tell me if I'm not fair with you. I just want to be honest, that's all. You can keep taking it as an offense, but you can use it as a good advice -- this is your choice.

Best wishes,
--SA