Clear Multiple TextBoxes in C#
If you are a beginner in Programming Languages and you’re using C#.net, this tutorial will help you minimize your codes and lessen your work. This procedure is to clear all the data in the TextBoxes in a certain Form, for example, when you create a “Registration” Form.
To start with:
Open Microsoft Visual Studio and create new Windows Form Application. Then do the following design of a Form as shown below.
After that, go to the Solution Explorer, double click the “View Code” to display the code editor.
Then, create a method for clearing the text in the Textboxes.
private void clearTxt(Control container)
{
try
{
//'for each txt as control in this(object).control
foreach (Control txt in container.Controls)
{
//conditioning the txt as control by getting it's type.
//the type of txt as control must be textbox.
if (txt is TextBox)
{
//if the object(textbox) is present. The result is, the textbox will be cleared.
txt.Text = "";
}
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}Go back to the design view, double click the “Clear” button and do the following codes for calling the method of clearing text.
private void button1_Click(object sender, EventArgs e)
{
//call a method for clearing all text in the textbox
clearTxt(this);
}Output:
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| ABOUT PROJECT | PROJECT DETAILS |
|---|---|
| Project Name : | Clear Multiple TextBoxes in C#.Net |
| Project Platform : | C# |
| Programming Language Used: | C# Programming Language |
| Developer Name : | itsourcecode.com |
| IDE Tool (Recommended): | Visual Studio 2019 |
| Project Type : | Desktop Application |
| Database: | None |
| Upload Date and Time: | June 13, 2016- 7:26 am |
Frequently Asked Questions
What does this C# WinForms control example demonstrate?
Core Windows Forms control (TextBox, CheckBox, RadioButton, ListBox, TreeView, ProgressBar, Button, DateTimePicker, etc.) usage pattern: properties, events, data binding, common gotchas. Foundation skill for building any C# desktop application capstone.
What .NET and SQL Server versions does this project require?
Most projects in this batch use C# WinForms on .NET Framework 4.5+ (the dominant stack for tutorial sites) with SQL Server 2012 Express or higher. A few newer projects use .NET 6/7/8. To run: install Visual Studio 2019 / 2022 (Community edition is free), install SQL Server Express + SSMS, open the .sln file, build, run.
How do I set up the database for this C# project?
Open SQL Server Management Studio (SSMS) and connect to your SQL Server instance (e.g. localhost\SQLEXPRESS). Right-click Databases > Restore Database OR > New Database then import the included .sql script. Update the connection string in App.config (or in code-behind) with your server name + credentials. Rebuild and run.
Can I use this C# project for a BSIT capstone or thesis?
Yes, but extend it. A bare CRUD form is too narrow for full capstone scope. Add: role-based access (admin/staff/customer login redirect), Crystal Reports or RDLC reports, dashboard with Chart controls, audit log, multi-branch support. Pair with Chapter 1-5 documentation matching your panel’s rubric.
Why am I getting ‘connection error’ or ‘object reference not set’?
Three common C# issues: (1) Connection error: SQL Server isn’t running OR connection string in App.config has wrong server name. Open SQL Server Configuration Manager + verify SQL Server (SQLEXPRESS) service is running. (2) NullReferenceException: a control reference or DB column returned NULL, add a check or use ?? operator. (3) Build error ‘The type or namespace could not be found’: missing assembly reference, add via Project > Add Reference.
Where can I find more C# projects with source code?
Browse the C# Projects hub for the full library. For other .NET stacks see VB.NET Projects (300+ Windows Forms systems). For ASP.NET WebForms see ASP.NET Projects. For BSIT capstone idea lists see 150 Best Capstone Project Ideas.
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