How to do Concatenation of input variable with Hardocoded value and show in Message box

Below code shows how to concatenate the input text box variable with an hard coded value and show in a message box on button click

 private void button1_Click(object sender, EventArgs e)
        {
            string strInputText = "Name";
            strInputText = "Hi" + strInputText
            MessageBox.Show(strInputText);
        }