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它发生之前,我把我的词典(词典)改为ConcurrentDictionary,并修复它。 但是,当我改变了事情,(字典保持不变)事情出错了。甚至当ConcAddDictionary抛出NullReferenceException时TryAdd()
这里是我的全部代码: http://pasted.co/fd94e190
它说列表为空。这就是方法。
Models.GridData getCurrentGrid()
{
Models.GridData data = new Models.GridData();
for (int i = 0; i < metroGrid1.Rows.Count; i++)
{
foreach (var item in metroGrid1.Rows[i].Cells)
{
if (item is DataGridViewCell)
{
Models.CellData cellData = new Models.CellData();
DataGridViewCell cell = item as DataGridViewCell;
cellData.column = cell.ColumnIndex;
cellData.row = cell.RowIndex;
if (string.IsNullOrEmpty((string)cell.Value) && string.IsNullOrWhiteSpace((string)cell.Value))
{
cellData.value = string.Empty;
}
else {
cellData.value = cell.Value;
}
//Occurs here right now
data.List.TryAdd(cellData.column.ToString() + " " + cellData.row.ToString(),cellData);
}
}
}
return data;
}
void Save()
{
Models.GridData data = new Models.GridData();
data = getCurrentGrid();
unsavedChanges = false;
StreamWriter writer = new StreamWriter(path);
writer.AutoFlush = true;
writer.Write(JsonConvert.SerializeObject(data.List));
writer.Close();
MetroFramework.MetroMessageBox.Show(this, "Başarıyla kaydedildi", "Yoklama Listesi-Talha Açıkgöz", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
}
编辑:Models.cs = http://pasted.co/13a7cb1c
而不是链接到长码别处,请尝试重现这在[MCVE] - 理想控制台通过硬编码数据的应用程序。在很多情况下,将真实代码减少到最低程度的例子揭示了这个问题。 –
@JonSkeet谢谢,我会试试,但现在我的时间非常有限:\ –
在'Save'方法中,我没有看到'data.List'的任何初始化,你似乎缺少一个。 – kiziu