CODEWITHSUNDEEP
c#
Amanda
Amanda

Reputation: 55

How to clear a textbox when a user starts to type new data

I'm creating an income tax calculator. I created a new event that clears the data in the income textbox when the user types new data. It is not clearing the data when you type, it just continues the number.

        // txtIncome
        // 
        this.txtIncome.Location = new System.Drawing.Point(125, 41);
        this.txtIncome.Name = "txtIncome";
        this.txtIncome.Size = new System.Drawing.Size(106, 20);
        this.txtIncome.TabIndex = 4;
        this.txtIncome.TextChanged += new System.EventHandler(clearIncome);

The above coding is what I gathered from the textbook to add for the event to work.

    private void btnCalculate_Click(object sender, EventArgs e)
    {
        income = Convert.ToDecimal(txtIncome.Text);
        incomeCalcualtor();
        txtOwed.Text = Convert.ToString(owed);
        txtIncome.Focus();

    }

    private void incomeCalcualtor()
    {
        if (income <= 9225)

            owed = (int)income * .10m;

        else if ((int)income > 9225m && (int)income <= 37450)
            owed = 922.50m + (int)((income - 9225) * .15m);

        else if (income > 37450 && income <= 90750)
            owed = 5156.25m + (int)((income - 37450) * .25m);

        else if (income > 90750 && income <= 189300)
            owed = 18481.25m + (int)((income - 90750) * .28m);

        else if (income >= 189300 && income <= 411500)
            owed = 46075.25m + (int)((income - 189300) * .33m);

        else if (income >= 411500 && income <= 413200)
            owed = 119401.25m + (int)((income - 411500) * .35m);

        else if (income <= 413200)
            owed = 11996.25m + (int)((income - 413200) * 39.6m);
    }


    private void btnExit_Click(object sender, EventArgs e)
    {
        this.Close();
    }

    private void clearIncome(object sender, EventArgs e)
    {
        txtIncome.Text = "";
    }

A textbox that clears when there is new data being entered

Upvotes: 1

Views: 80

Answers (3)

Hien Nguyen
Hien Nguyen

Reputation: 18975

You should implement click event and use clear method like this

 this.txtIncome.Click += new System.EventHandler(clearIncome);

private void clearIncome(object sender, EventArgs e)
    {
        txtIncome.Clear();
    }

Upvotes: 0

Bijay Koirala
Bijay Koirala

Reputation: 242

This might help. The below code will clear the textbox txtIncome when it is double clicked.

Inculde MouseDoubleClick event and Name in txtIncome as below.

<TextBox MouseDoubleClick="txtIncome_MouseDoubleClick" Name="txtIncome" />

private void txtIncome_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
  txtIncome.Clear();
}

Upvotes: 1

TheGeneral
TheGeneral

Reputation: 81473

I am not sure if this will help you out. However, you can use the onclick event, and SelectAll(). This will have a similar affect, and is very common in windows apps

private void TextBoxOnClick(object sender, EventArgs eventArgs)
{
    var textBox = (TextBox)sender;
    textBox.SelectAll();
    textBox.Focus(); // might not need this
}

Upvotes: 0

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