[c#] Set color of text in a Textbox/Label to Red and make it bold in asp.net C#

I want a text color to be red in color on certain condition.

Here is how i want to get it done.

string minusvalue = TextBox1.Text.ToString();
if (Convert.ToDouble(minusvalue) < 0)
{ 
// set color of text in TextBox1 to red color and bold.
}

Is there any function that can set the property of text in TextBox? Please help!

This question is related to c# asp.net colors text-formatting

The answer is


TextBox1.ForeColor = Color.Red;
TextBox1.Font.Bold = True;

Or this can be done using a CssClass (recommended):

.highlight
{
  color:red;
  font-weight:bold;
}

TextBox1.CssClass = "highlight";

Or the styles can be added inline:

TextBox1.Attributes["style"] = "color:red; font-weight:bold;";

Another way of doing it. This approach can be useful for changing the text to 2 different colors, just by adding 2 spans.

Label1.Text = "String with original color" + "<b><span style=""color:red;"">" + "Your String Here" + "</span></b>";

string minusvalue = TextBox1.Text.ToString();

if (Convert.ToDouble(minusvalue) < 0)
{ 
    // set color of text in TextBox1 to red color and bold.
    TextBox1.ForeColor = Color.Red;
}

Try using the property ForeColor. Like this :

TextBox1.ForeColor = Color.Red;

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