C＃winform：if else for picturebox [英] C# winform: if else for picturebox

问题描述

我的代码应该，如果文本框为空，则pictureBox 1将出现，否则将出现picturebox 2



我尝试过：

My code should, if the textbox is empty the pictureBox 1 will appear else will appear picturebox 2

What I have tried:

if (tb5.Text == "")
{
    string myStringVariable1 = string.Empty;
    pictureBox1.Image == true(); // calling the picture

}
else
{
    pictureBox2.Image == true(); // calling the picture

}

推荐答案

尝试：

Try:

pictureBox1.Visible = false;
pictureBox2.Visible = false;
if (string.IsNullOrWhiteSpace(tb5.text))
   {
   pictureBox1.Visible = true;
   }
else
   {
   pictureBox2.Visible = true;
   }

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