Comparison of two textboxs

Zeb Muhammad

Dear Friends,
I want to compare two values of textboxs please, check my code

Int32 val11 = Convert.ToInt32(textBox4.Text);
 Int32 val22 = Convert.ToInt32(textBox10.Text);
 if(val11 >> val22)
 { 
 MessageBox.Show("Please, check Maximum Limit of Quantity.Quantity should be less tha fix Limit", "Limit", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Warning);
                        textBox15.Focus();
                        textBox4.ForeColor = Color.Red;
 }
 else
 {
                        textBox4.ForeColor = Color.Green;
 }

I got error.

Error CS0029 Cannot implicitly convert type 'int' to 'bool'

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Gokhul Varman9y ago
Please refer the link for full details:https://stackoverflow.com/questions/31262263/comparing-two-text-box-which-contains-email-id
Tapan Patel9y ago
This line is giving an error.
if(val11 >> val22)
You are expected to have boolean value as return type for the condition expression whereas you are doing bitwise shift operation which returns integer.

try doing
if(val11 > val22)
Anil Jha9y ago
Convert.ToInt32() may throw an exception, if the input string is not able to convert into number. Therefore, use Int32.TryParse() method to avoid exception.
Int32 val11;
Int32 val22;
Int32.TryParse(textBox4.Text, out val11);
Int32.TryParse(textBox10.Text, out val22);
if (val11 > val22)
{
    MessageBox.Show("Please, check Maximum Limit of Quantity.Quantity should be less tha fix Limit", "Limit", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Warning);
    textBox15.Focus();
    textBox4.ForeColor = Color.Red;
}
else
{
    textBox4.ForeColor = Color.Green;
}
Midhun Tp9y ago
Hi,

Just try below code -
Int32 val11 = Convert.ToInt32(textBox4.Text);
Int32 val22 = Convert.ToInt32(textBox10.Text);
if (val11 > val22)
{
    MessageBox.Show("Please, check Maximum Limit of Quantity.Quantity should be less tha fix Limit", "Limit", MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Warning);
    textBox15.Focus();
    textBox4.ForeColor = Color.Red;
}
else
{
    textBox4.ForeColor = Color.Green;
}
Zeb Muhammad9y ago
Dear TP,
just i want to compare (Greater Than) two values fo textboxs ....
but i can't/ ...
Midhun Tp9y ago
Hi,

You are using Shift operation in your if condition. Change code as below -

if(val11 > val22)

To know more about shift operator, check below article -

https://www.dotnetperls.com/shift