- div>
- asp:TextBox ID="txtR" runat="server">asp:TextBox>
- asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="txtR"
- Display="Dynamic" ErrorMessage="超過255" MaximumValue="255" MinimumValue="0" Type="Integer">asp:RangeValidator>
- asp:TextBox ID="txtG" runat="server">asp:TextBox>
- asp:RangeValidator ID="RangeValidator2" runat="server" ControlToValidate="txtG"
- Display="Dynamic" ErrorMessage="超過255" MaximumValue="255" MinimumValue="0" Type="Integer">asp:RangeValidator>
- asp:TextBox ID="txtB" runat="server">asp:TextBox>
- asp:RangeValidator ID="RangeValidator3" runat="server" ControlToValidate="txtB"
- Display="Dynamic" ErrorMessage="超過255" MaximumValue="255" MinimumValue="0" Type="Integer">asp:RangeValidator>
- asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="給我轉" />br />
- div>
- table>
- tr>
- td style="width: 100px">
- 原始顏色td>
- td style="width: 30px">
- td>
- td rowspan="2" style="width: 100px">
- table>
- tr>
- td align="center" style="font-weight: bold; width: 204px">
- HEX
- td>
- tr>
- tr>
- td align="center" style="width: 100px">
- asp:Label ID="labHEX" runat="server">asp:Label>
- td>
- tr>
- tr>
- td align="center" style="font-weight: bold; width: 204px">
- HSB
- td>
- tr>
- tr>
- td align="center" style="width: 100px">
- asp:Label ID="labHSB" runat="server">asp:Label>
- td>
- tr>
- table>
- br />
- br />
- td>
- tr>
- tr>
- td style="width: 100px">
- asp:Panel ID="show" runat="server" Height="100px" Width="100px">
- asp:Panel>
- td>
- td style="width: 30px">
- td>
- tr>
- table>
▲程式頁就直接給它以下code
#region 變數宣告到位
int R = Convert.ToInt32(this.txtR.Text);
int G = Convert.ToInt32(this.txtG.Text);
int B = Convert.ToInt32(this.txtB.Text);
this.show.BackColor = System.Drawing.Color.FromArgb(255, R, G, B);
float sH, sB, sS, aH, aS, aB, aF, aP, aQ, aT;
int lH;
#endregion
#region 利用陣列排序取出最大值和最小值
ArrayList colorArr = new ArrayList();
colorArr.Add(R);
colorArr.Add(G);
colorArr.Add(B);
colorArr.Sort();
float max = Convert.ToInt16(colorArr[colorArr.Count - 1]);
float mix = Convert.ToInt16(colorArr[0]);
#endregion
#region RGB TO HEX
this.labHEX.Text = string.Format("#{0:X2}{1:X2}{2:X2}", R, G, B);
#endregion
#region RGB TO HSB
sH = System.Drawing.Color.FromArgb(255, R, G, B).GetHue();
sS = (max - mix) / max;
sS = Convert.ToSingle(sS.ToString("N2").Substring(sS.ToString().IndexOf('.') + 1, 2));
sB = max;
sB = max / 255;
sB = Convert.ToSingle(sB.ToString("N2").Substring(sB.ToString().IndexOf('.') + 1, 2));
this.labHSB.Text = string.Format("{0:F0},{1},{2}", sH, sS, sB);
colorArr = null;
#endregion
#region HSB TO RGB
sH = (sH % 360);
if (sS > 100)
{
sS = 100;
}
else if (sS
{
sS = 0;
}
if (sB > 100)
{
sB = 100;
}
else if (sB
{
sB = 0;
}
if (sS > 0)
{
aH = sH / 60;
aS = sS / 100;
aB = sB / 100;
lH = Convert.ToInt32(aH);
aF = aH - lH;
aP = aB * (1 - aS);
aQ = aB * (1 - aS * aF);
aT = aB * (1 - aS * (1 - aF));
switch (lH)
{
case 0:
R = Convert.ToInt32(aB * 255);
G = Convert.ToInt32(aT * 255);
B = Convert.ToInt32(aP * 255);
break;
case 1:
R = Convert.ToInt32(aQ * 255);
G = Convert.ToInt32(aB * 255);
B = Convert.ToInt32(aP * 255);
break;
case 2:
R = Convert.ToInt32(aP * 255);
G = Convert.ToInt32(aB * 255);
B = Convert.ToInt32(aT * 255);
break;
case 3:
R = Convert.ToInt32(aP * 255);
G = Convert.ToInt32(aQ * 255);
B = Convert.ToInt32(aB * 255);
break;
case 4:
R = Convert.ToInt32(aT * 255);
G = Convert.ToInt32(aP * 255);
B = Convert.ToInt32(aB * 255);
break;
case 5:
R = Convert.ToInt32(aB * 255);
G = Convert.ToInt32(aP * 255);
B = Convert.ToInt32(aQ * 255);
break;
}
}
else
{
R = Convert.ToInt32((sB * 255) / 100);
G = Convert.ToInt32(R);
B = Convert.ToInt32(R);
}
R = R > 255 ? 255 : R;
G = G > 255 ? 255 : G;
B = B > 255 ? 255 : B;
#endregion
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