我需要为每一行着色取决于每个字符串表单列表中的最后一个字符。这是我的代码,它始终将最后一行设为绿色。它有什么问题?
List<string> plik = File.ReadAllLines(path).ToList();
string pom;
int size = plik.Count;
richTextBox1.Clear();
for (int i = 0; i < size; i++)
{
richTextBox1.Text += "[" + i.ToString() + "]" + " " + plik[i] + Environment.NewLine;
pom =plik[i];
richTextBox1.Select(richTextBox1.GetFirstCharIndexFromLine(i), richTextBox1.Lines[i].Length);
// richTextBox1.Select(0, pom.Length);
if (pom.Substring(pom.Length - 1) == "n")
{
richTextBox1.SelectionBackColor = pom.Substring(pom.Length - 1) == "n" ? Color.Red :Color.Red;
}
if(pom.Substring(pom.Length - 1) != "n")
{
richTextBox1.SelectionBackColor = pom.Substring(pom.Length - 1) != "n"?Color.Green:Color.Green;
}
}
答案 0 :(得分:1)
只需替换
richTextBox1.Text += "[" + i.ToString() + "]" + " " + plik[i] + Environment.NewLine;
通过
richTextBox1.AppendText("[" + i.ToString() + "]" + " " + plik[i] + Environment.NewLine);
答案 1 :(得分:0)
附加文本而不是整体修改它。使用+=
将替换整个字符串,因此您每次都会丢失设置的颜色。请改用AppendText
。
您还可以删除代码中不必要的if
。这应该有效:
for (int i = 0; i < size; i++)
{
richTextBox1.AppendText("[" + i.ToString() + "]" + " " + plik[i] + Environment.NewLine);
richTextBox1.Select(richTextBox1.GetFirstCharIndexFromLine(i), richTextBox1.Lines[i].Length);
richTextBox1.SelectionBackColor = plik[i][plik[i].Length - 1] == 'n' ? Color.Red : Color.Green;
}