我有一個按鈕,將+100添加到跟蹤欄。 最大值43000,如果值爲43000,並且單擊該按鈕將會出錯。跟蹤欄中的最大值
值'43001'對'Value'無效。 「價值」必須介於「最低」和「最高」之間。
private void button41_Click(object sender, EventArgs e)
{
trackBar1.Value = trackBar1.Value += 100;
label27.Text = "" + trackBar1.Value;
}
解決的問題:
public Form1()
{
me = this;
InitializeComponent();
trackBar1.Maximum = 43000;
trackBar1.Minimum = 40;
}
按鈕
private void button41_Click(object sender, EventArgs e)
{
if (trackBar1.Value + 100 <= trackBar1.Maximum)
{
trackBar1.Value = trackBar1.Value += 100;
label27.Text = "Frequency = " + trackBar1.Value;
}
else
{
MessageBox.Show("Max value = " + trackBar1.Maximum);
}
}
42990 + 100 without errors if I click add
Message displayed when trying add more than the supported value
什麼是你的問題? – SergeyS