Conditional operarator in C#

Question

1.00/5 (1 vote)

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Hi friends..

I have 6 textboxes for and a search button.
here i want a logic that if any one value entered then only that button method should fire.
else it should throw an error .
provide a bettor solution..

Posted 4-Dec-12 22:12pm

narla.venkatesh

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Comments

Herman<T>.Instance 5-Dec-12 4:13am

what have you tried? Where do you get stuck?

narla.venkatesh 5-Dec-12 4:18am

near the if condition. hw can we take 6 statements?

bbirajdar 5-Dec-12 4:18am

Have you heard of required field validators ? Try them ...

narla.venkatesh 5-Dec-12 4:20am

actually i have to do server side validation not in the ui

bbirajdar 5-Dec-12 4:22am

Any reason for increasing the load on server ?

2 solutions

Solution 2

hi dear,
here use one function.

C#

public bool IsValid()
        {
            bool flag = true;

            if (textBox1.Text.Trim() == "")
            {
                ErrPro.SetError(textBox1, "textBox1 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox1, "");
            }


            if (textBox2.Text.Trim() == "")
            {
                ErrPro.SetError(textBox2, "textBox2 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox2, "");
            }

            if (textBox3.Text.Trim() == "")
            {
                ErrPro.SetError(textBox3, "textBox3 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox3, "");
            }

            if (textBox4.Text.Trim() == "")
            {
                ErrPro.SetError(textBox4, "textBox4 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox4, "");
            }

            if (textBox5.Text.Trim() == "")
            {
                ErrPro.SetError(textBox5, "textBox5 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox5, "");
            }

            if (textBox6.SelectedIndex == 0)
            {
                ErrPro.SetError(textBox6, "textBox6 value is required.");
                flag = false;
            }
            else
            {
                ErrPro.SetError(textBox6, "");
            }

            return flag;
        }

//-------------------------------------

C#

private void SearchButton_Click(object sender, EventArgs e)
        {
            if (!IsValid() == true)
            {
                return;
            }

            else
            {
              // Continue.
            }
        }

Posted 5-Dec-12 0:21am

azizulhoque.bd

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Krunal Rohit · Accepted Answer · 2012-12-04T22:21:00

Solution 1

Here I'v taken only 3 Textboxes.. Make changes as per your need.. Write code under Button_Click event

C#

if (txtCity.Text == "" || txtCountry.Text == "" || txtState.Text=="")
            {
                throw new Exception("Enter data");
            }
            else
            {
                //perform your desire operations
            }

Posted 4-Dec-12 22:21pm

Krunal Rohit

Comments

bbirajdar 5-Dec-12 4:22am

Correct one +5

[no name] 5-Dec-12 4:23am

Thanks man :)

Herman<T>.Instance 5-Dec-12 5:18am

you could also check via if(string.IsNullOrEmpty(txtCity.text.....)

DaveyM69 5-Dec-12 7:37am

Rather than == "" it would be better to use String.IsNullOrEmpty(textBox.Text).
Also, exceptions should be more specific - ArgumentNullException would be a better choice here.

[no name] 5-Dec-12 7:39am

Ya, its a basic idea.. so chill :)