我有一个从SQLite3数据库填充的wx.Grid。用户在文本控件中输入数据,然后单击“提交值”按钮。这些值被写入数据库,然后该函数将数据库加载到网格中。数据库有一个索引,它从'1'开始。该表是这样的:wxGrid行号不与SQLite3数据库同步
CREATE TABLE Cycles
( index
INTEGER, First
INTEGER, Second
TEXT, Third
INTEGER, Fourth
INTEGER, Fifth
INTEGER, Sixth
INTEGER, Seventh
INTEGER, Eighth
INTEGER, PRIMARY KEY(index
)
当数据库加载时,列号跳转并从'0'而不是'1'开始,并且第一行值填充行'1',使行'0'空白。如果我将onLoadTable()中的行号定义更改为'rowNumb = row +1',那么当单击“Commit Values”按钮时,行从'1'开始,但这些值将填充第二行离开行'1 '空白。 这里是全功能的,可重复的代码:
import wx
import wx.lib.scrolledpanel as scrolled
import sqlite3 as sqlite
import wx.grid as gridlib
class MasterFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, wx.ID_ANY,"",size=(900,400))
panel = wx.Panel(self, -1)
self.db = db
self.c = self.db.conn.cursor()
vbox = wx.BoxSizer(wx.VERTICAL)
self.grid = wx.grid.Grid(panel)
rowN = self.c.execute('SELECT Count(*) FROM Cycles')
val = rowN.fetchone()
rowNum = val[0] + 3
self.grid.CreateGrid(rowNum,8)
self.grid.Scroll(0,0)
self.enterBtn = wx.Button(panel, -1, "Commit Values")
self.Bind(wx.EVT_BUTTON, self.onEnter, self.enterBtn)
vbox.Add(self.enterBtn)
vbox.Add(self.grid)
panel.SetSizer(vbox)
panel.Fit()
def onEnter(self, event):
First = 1
Second = 'mine'
Third = 1
Fourth = .5
Fifth = 1
Sixth = 20
Seventh = 4
Eighth = 10
self.c.execute("INSERT INTO datatable VALUES (NULL,?,?,?,?,?,?,?,?);",(First,Second,Third,Fourth,Fifth,Sixth,Seventh,Eighth))
self.db.conn.commit()
self.onLoadTable()
def onLoadTable(self):
self.grid.ClearGrid()
for row in range(12):
rowNumb = row #+ 1
self.grid.SetRowLabelValue(row, "%s" %rowNumb)
meta = self.c.execute('SELECT * from datatable')
labels = []
for i in meta.description:
labels.append(i[0])
labels = labels[1:]
for i in range(len(labels)):
self.grid.SetColLabelValue(i, labels[i])
all = self.c.execute('SELECT * from datatable')
for row in all:
row_num = row[0]
cells = row[1:]
for i in range(len(cells)):
if cells[i] != None and cells[i] != "null":
self.grid.SetCellValue(row_num, i, str(cells[i]))
self.db.conn.commit()
class GetDatabase():
def __init__(self):
self.conn = sqlite.connect("data4.db")
if __name__ == "__main__":
db=GetDatabase()
app = wx.App(False)
frame = MasterFrame()
frame.Show()
app.MainLoop()
如果我添加... WHERE指数=%d”%rowNumb的SELECT语句,我得到sqlite3.OperationalError:近 “指数”:语法错误
指数减去1是一个SQL关键字。更好的名字你列别的东西或引用它'(反引号)。 –
我改变了列建议的名字,我发现如果我添加了一个rec ord然后将主键强制为'0'(使用'DB Browser for SQLite'),第一行将正确加载到网格中。我需要从一个空表开始,第一个记录始终以主键为'1'开始。 –