Question

我正在尝试创建一个简单的应用程序，将文件的标题行映射到DB中的表中。我创建了一个函数，它在逗号上拆分标题行，然后在文本框中显示它（每行一列）。然后我从数据库中提取所有列并执行相同的操作。我接下来要做的是一个automap，它只是检查文件中的列是否与db列完全匹配。如果是，则匹配它们并将它们放在中心文本框中，如下所示：Col1 : Col1。我希望能够做的下一步是手动映射那些没有完全相同的名称。我的想法是能够选择最左侧文本框中的列（显示整行被选中）并对DB执行相同操作，一旦它们都有选择，它就会将其添加到中间匹配的文本框中。如何匹配标题中的列以将其与db？

中的列绑定

XAML：

<Grid>
    <Button x:Name="btnOpenFile" Padding="10" Click="btnOpenFile_Click" Content="Open file" Margin="30,8,594,356"/>
    <TextBox Name="txtEditor" IsReadOnly="True" Margin="30,105,518,10" />
    <Label Margin="30,68,649,319">Header from file</Label>
    <TextBox x:Name="txtEditor_db" Margin="525,105,23,10" />
    <Label Margin="525,68,72,319" Content="Column Mappings from db&#xD;&#xA;"/>
    <TextBox x:Name="txtEditor_db_Copy" Margin="307,167,295,93" />
</Grid>

代码背后： public partial class MainWindow：Window { List mappings = new List（）;

    public MainWindow()
    {
        InitializeComponent();
    }

    private void btnOpenFile_Click(object sender, RoutedEventArgs e)
    {
        OpenFileDialog openFileDialog = new OpenFileDialog();
        if (openFileDialog.ShowDialog() == true)
        {
            txtEditor.Text = string.Join(Environment.NewLine, File.ReadLines(openFileDialog.FileName).First().Replace(" ","").Split(','));
        }

        if(txtEditor.Text.Count() > 0)
        {
            using(LocalDataEntities db = new LocalDataEntities())
            {
                txtEditor_db.Text = string.Join(Environment.NewLine, db.Database.SqlQuery<string>("SELECT name FROM sys.columns WHERE object_id = OBJECT_ID('MyTable');").ToList());
            }
        }

        TryAutoMapping();
        RefreshMappingBox();
    }

    private void RefreshMappingBox()
    {
        foreach (HeaderToDBMapping map in mappings) {
            txtEditor_db_Copy.Text += string.Format("{0} : {1}{2}", map.source, map.destination, Environment.NewLine);
        }
    }

    private void TryAutoMapping()
    {
        List<string> columnsSource = txtEditor.Text.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None).ToList();
        List<string> columnsDB = txtEditor_db.Text.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None).ToList();

        foreach (string col in columnsSource)
        {
            foreach (string colDB in columnsDB)
            {
                if (col.Equals(colDB))
                {
                    mappings.Add(new HeaderToDBMapping(col, colDB, true));
                }
            }
        }
    }
}

HeaderToDBMapping：

public class HeaderToDBMapping
    {
        public string source;
        public string destination;
        public bool autoMapped = false;

    public HeaderToDBMapping(string source, string destination, bool autoMapped)
    {
        this.source = source;
        this.destination = destination;
        this.autoMapped = autoMapped;
    }
}

Answer 1

我不完全明白你在这里尝试做什么，但我建议你使用Snake::runThread代替ListBox，这样你就可以选择要手动映射的项目。

WPF文件头映射

1 个答案: