[英]Button Background Image Check?
請問我在嘗試檢查按鈕的背景圖像時遇到問題。 如果按鈕的圖像與資源文件夾中的圖像匹配,我想刪除該按鈕。 我努力了
private void DeleteCard(Button btn)
{
if (btn.BackgroundImage.Equals( FunWaysInc.Properties.Resources.Card_1))
{
playersCards.Remove(Properties.Resources.Card_1);
MessageBox.Show(playersCards.Count.ToString());
}
else
{
MessageBox.Show("NO");
}
}
private void frmQuickSpark_Load(object sender, EventArgs e)
{
Button tstbtn = new Button();
tstbtn.BackgroundImage = Properties.Resources.Card_1;
DeleteCard(tstbtn);
}
但是顯示的消息框是顯示“否”的消息。
請問發生了什么事?
添加按鈕時
button.Tag = "ToDelete";
然后再
foreach (Button b in this.Controls.OfType<Button>())
{
if(b.Tag == "ToDelete")
{
//delete
}
}
在這里您必須要做的。 您需要枚舉所有圖像並將指針存儲在按鈕的Tag屬性中。
private Dictionary<string, Image> _table = new Dictionary<string, Image>();
private void frmQuickSpark_Load(object sender, EventArgs e)
{
_table.Add("Image1", Properties.Resources.Card_1);
_table.Add("Image2", Properties.Resources.Card_2);
Button btn = new Button();
SetButtonImage(btn);
DeleteCard(btn);
}
private void SetButtonImage(Button button)
{
button.BackgroundImage = _table["Image1"];
button.BackgroundImage.Tag = "Image1";
}
private void DeleteCard(Button btn)
{
if (btn.BackgroundImage.Tag == "Image1")
{
playersCards.Remove(btn); // not sure what your logic of removal
MessageBox.Show(playersCards.Count.ToString());
}
else
{
MessageBox.Show("NO");
}
}
我已經找到了問題的答案。我剛剛修改了代碼
private void DeleteCard(Image img)
{
playersCards.Add(Properties.Resources.Card_1);
if (img == playersCards[0])
{
playersCards.Remove(Properties.Resources.Card_1);
MessageBox.Show(playersCards.Count.ToString());
}
else
{
MessageBox.Show("NO");
}
}
private void frmQuickSpark_Load(object sender, EventArgs e)
{
Button tstbtn = new Button();
tstbtn.BackgroundImage = Properties.Resources.Card_1;
Image img = tstbtn.BackgroundImage;
DeleteCard(img);
}
它運作完美。
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