winforms-gridview单元格时间跨度编辑问题
下面是在gridview中格式化timespan值的问题 我只在网格中显示分钟值,如下所示winforms-gridview单元格时间跨度编辑问题,winforms,datagridview,formatting,Winforms,Datagridview,Formatting,下面是在gridview中格式化timespan值的问题 我只在网格中显示分钟值,如下所示 DataGridViewColumn idleTimeColumn = myGridView.Columns["IdleTime"]; idleTimeColumn.DefaultCellStyle.FormatProvider = new TimeSpanFormatter(); idleTimeColumn.DefaultCellStyle.Format = "m"; 这个单元格是可编辑的,所以当我
DataGridViewColumn idleTimeColumn = myGridView.Columns["IdleTime"];
idleTimeColumn.DefaultCellStyle.FormatProvider = new TimeSpanFormatter();
idleTimeColumn.DefaultCellStyle.Format = "m";
这个单元格是可编辑的,所以当我在单元格中输入5表示5分钟时,它应该以分钟为单位,但它以天值为单位,即5.00:00:00
我尝试了不同的格式mm值,%m,但所有这些都给出了相同的输出。尝试或代替m;idleTimeColumn.DefaultCellStyle.Format=mm 我相信您正在正确处理单元格格式事件
您必须实现该功能来解析输入值 TimeSpanFormatter可用于将绑定的TimeSpan数据转换为用于显示的格式化字符串。但它无法将输入值转换为TimeSpan。必须在DataGridView.CellParsing事件处理程序中转换输入值 下面是解析输入值的示例代码 DataGridView.CellParsing事件处理程序 TimeSpanParser类
@沙里克:告诉我们它不起作用并不是特别有帮助。为什么不起作用?当您尝试它时,您看到了什么?这与您期望/期望的有什么不同?是的,我正在处理Q中指定的单元格格式化事件
private void dataGridView1_CellParsing(object sender, DataGridViewCellParsingEventArgs e)
{
if (e.DesiredType == typeof(TimeSpan))
{
TimeSpanParser parser = new TimeSpanParser();
e.Value = parser.Parse(e.Value.ToString(), e.InheritedCellStyle.Format);
e.ParsingApplied = true;
}
}
public class TimeSpanParser
{
private Regex formatParser;
private List<TimeSpanPart> parts;
public TimeSpanParser()
{
this.formatParser = new Regex("d{1,2}|h{1,2}|m{1,2}|s{1,2}|f{1,7}", RegexOptions.Compiled);
this.parts = new List<TimeSpanPart>();
}
public TimeSpan Parse(string input, string format)
{
this.parts.Clear();
var pattern = this.formatParser.Replace(format, m => ReplaceFormat(m));
var match = Regex.Match(input, "^" + pattern + "$");
TimeSpan result = new TimeSpan();
for (int i = 1; i < match.Groups.Count; i++)
{
var value = Convert.ToDouble(match.Groups[i].Value);
switch (this.parts[i - 1])
{
case TimeSpanPart.Day:
result = result.Add(TimeSpan.FromDays(value));
break;
case TimeSpanPart.Hour:
result = result.Add(TimeSpan.FromHours(value));
break;
case TimeSpanPart.Minute:
result = result.Add(TimeSpan.FromMinutes(value));
break;
case TimeSpanPart.Second:
result = result.Add(TimeSpan.FromSeconds(value));
break;
case TimeSpanPart.Millisecond:
int digit = match.Groups[i].Value.Length;
value =value * Math.Pow(10, 3 - digit);
result = result.Add(TimeSpan.FromMilliseconds(value));
break;
}
}
return result;
}
private string ReplaceFormat(Match match)
{
switch (match.Value)
{
case "dd":
case "d":
this.parts.Add(TimeSpanPart.Day);
return "(\\d{1,2})";
case "hh":
case "h":
this.parts.Add(TimeSpanPart.Hour);
return "(\\d{1,2})";
case "mm":
case "m":
this.parts.Add(TimeSpanPart.Minute);
return "(\\d{1,2})";
case "ss":
case "s":
this.parts.Add(TimeSpanPart.Second);
return "(\\d{1,2})";
case "fffffff":
case "ffffff":
case "fffff":
case "ffff":
case "fff":
case "ff":
case "f":
this.parts.Add(TimeSpanPart.Millisecond);
return "(\\d{1,7})";
default:
return match.Value;
}
}
}
public enum TimeSpanPart
{
Day,
Hour,
Minute,
Second,
Millisecond,
}