Label 返回零值

Question

I have the following code in ASP.NET but when run the code it returns me 0 value in label lblassest.Text . Can anyone tell me where is the problem?

if (reader.Read())
{
    decimal price;
    decimal.TryParse(lblcurrentbtc.Text, out price);

    decimal pr_charges = reader["WallBalan"] == DBNull.Value ? 0 : Convert.ToDecimal(reader["WallBalan"]);
    lblamount.Text = pr_charges.ToString();

    lblassest.Text = ((Convert.ToDecimal(reader["WallBalan"]) * price)).ToString();
    
    reader.Close();
}

Please note that the lblcurrentbtc.Text have value like 54897.56062971018.

Thx for your helps

Answer 1

0 is the default value - try setting a breakpoint in your if statement to verify the string value is as you expect. Your lblcurrentbtc.Text may be null or empty string at the point this code runs.

Answer 2

If I write this code:

var lblcurrentbtc = new Label();
var lblamount = new Label();
var lblassest = new Label();
var reader = new Dictionary<string, object>();

reader["WallBalan"] = 2m;
lblcurrentbtc.Text = 54897.56062971018m.ToString();

Then I run your code verbatim after it:

decimal price;
decimal.TryParse(lblcurrentbtc.Text, out price);

decimal pr_charges = reader["WallBalan"] == DBNull.Value ? 0 : Convert.ToDecimal(reader["WallBalan"]);
lblamount.Text = pr_charges.ToString();

lblassest.Text = ((Convert.ToDecimal(reader["WallBalan"]) * price)).ToString();

The value of lblamount.Text & lblassest.Text are 2 & 109795.12125942036 , respectively.

Your code is working fine as it is. Your issue is that lblcurrentbtc.Text doesn't contain the value that you think it does.