c# - 通过模板从 WinForm 应用程序生成的 Excel 文件有时是“不可见的”

Question

我们有一个 WinForm 应用程序，它使用 VSTO 从模板生成 Excel 文件。

偶尔（经常）打开文件（因为您可以使用光标键以及公式和单元格更改）但它是不可见的。即使您保存文件并重新打开它，它仍然是不可见的。

用户使用 Excel 2007，几乎所有（6 - 8 位）用户都遇到了这个问题。

我给他们的（临时）修复是选择“全部排列”。完成后，工作表会弹出视图。

我在网上看到了几个原因和解决方法。一切都来自使用 Excel 2003 中的模板中的图形，但 Excel 2007 中没有。

该模板非常“简单”。它有公式、字体和颜色，仅此而已。

模板（和 WinForm 应用程序）通过 Click Once 部署给用户。

以下是“ThisWorkbook.cs”文件中的代码：

public string TemplateTableName;
public string TemplateSelectStatement;

private void ThisWorkbook_Startup(object sender, System.EventArgs e)
{
    Properties.Settings.Default.myConnectionString = Registry.GetValue("myConnectionString", Properties.Settings.Default.appConnectionString).ToString();
    TemplateTableName = Registry.GetValue("TemplateTableName", string.Empty).ToString();
    TemplateSelectStatement = Registry.GetValue("TemplateSelectStatement", string.Empty).ToString();

    AppLog.ConnectionString = Properties.Settings.Default.myConnectionString;
}

以下是“Sheet1.cs”文件中的代码：

private const int StartingDataRow = 4;

private int LastRow;
private int NextAvailableColumn = 18;

DataSet myDS = new DataSet();

Dictionary<string, object[,]> xlsColumnData = new Dictionary<string, object[,]>();


private void Sheet1_Startup(object sender, System.EventArgs e)
{
    try
    {
        if (Globals.ThisWorkbook.TemplateTableName == string.Empty) throw new Exception("TemplateTableName is not set in the registry.");
        if (Globals.ThisWorkbook.TemplateSelectStatement == string.Empty) throw new Exception("TemplateSelectStatement is not set in the registry.");

        Application.ScreenUpdating = false;

        if (Globals.ThisWorkbook.TemplateTableName.Length > 31)
            this.Name = Globals.ThisWorkbook.TemplateTableName.Substring(0, 31);
        else
            this.Name = Globals.ThisWorkbook.TemplateTableName;


        LoadTableData();
        LoadDataArrays();
        BindDataToColumns();
        ApplyFormulas();
        ApplyFormatting();

        this.Range["B4", missing].Select();

        Application.ScreenUpdating = true;

        AppLog.WriteEvent(DateTime.Now, Environment.UserName, Environment.MachineName, Globals.ThisWorkbook.TemplateTableName, TraceEventType.Information, "Creating customer list");

        Globals.ThisWorkbook.RemoveCustomization();
    }
    catch (Exception ex)
    {
        AppLog.Show(ex.Message, "Sheet1_Startup", MessageBoxButtons.OK, MessageBoxIcon.Error, MessageBoxDefaultButton.Button1, TraceEventType.Error);
    }
    finally
    {
        Application.ScreenUpdating = true;
    }
}

private void LoadTableData()
{
    try
    {
        Application.Cursor = XlMousePointer.xlWait;

        string selectCommandText = Globals.ThisWorkbook.TemplateSelectStatement.Replace("[Bind_Type]", "dbo.GetBindingCodeDescription([Bind_Type]) AS Binding_Description");

        SqlDataAdapter da = new SqlDataAdapter(selectCommandText, Public_No_Holdings.Properties.Settings.Default.myConnectionString);
        da.SelectCommand.CommandTimeout = 60;

        if (da.SelectCommand.Connection.State != ConnectionState.Closed) da.SelectCommand.Connection.Close();
        da.Fill(this.myDS);

        LastRow = (StartingDataRow + this.myDS.Tables[0].Rows.Count) - 1;
    }
    catch (Exception ex)
    {
        AppLog.Show(ex.Message, "Loading Table", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
    finally
    {
        Application.Cursor = XlMousePointer.xlDefault;
    }
}
private void LoadDataArrays()
{
    System.Data.DataTable dt = this.myDS.Tables[0];

    // insert the data into the object[,]
    object[,] rowData;
    dt.Columns["Imprint"].ColumnName = "Publisher"; //Alias the Imprint dataset column to populate the "Publisher" xls column
    for (int iCol = 0; iCol < dt.Columns.Count; iCol++)
    {
        rowData = new object[dt.Rows.Count, 1];

        for (int iRow = 0; iRow < dt.Rows.Count; iRow++)
        {                   
            switch (dt.Columns[iCol].ColumnName)
            {
                case "EAN":
                    rowData[iRow, 0] = "'" + dt.Rows[iRow][iCol];
                    break;

                case "IPage_Link":
                    rowData[iRow, 0] = String.Format("=HYPERLINK(\"{0}\", \"{1}\")", dt.Rows[iRow][iCol], "iPage");
                    break;

                default:
                    rowData[iRow, 0] = dt.Rows[iRow][iCol];
                    break;
            }
        }

        xlsColumnData.Add(dt.Columns[iCol].ColumnName, rowData);
    }
}

private void BindDataToColumns()
{
    NamedRange nr;
    Range rng;

    foreach (KeyValuePair<string, object[,]> kvp in xlsColumnData)
    {
        try
        {
            if (this.Controls.Contains(kvp.Key))
            {
                nr = (NamedRange)this.Controls[kvp.Key];

                // Reduce range (remove header rows)
                rng = this.Range[this.Cells[StartingDataRow, nr.Column], this.Cells[LastRow, nr.Column]];
                rng.Value2 = kvp.Value;
            }
            else
            {
                this.Cells[StartingDataRow - 1, NextAvailableColumn].Value2 = kvp.Key;
                rng = this.Range[this.Cells[StartingDataRow, NextAvailableColumn], this.Cells[LastRow, NextAvailableColumn]];
                rng.Value2 = kvp.Value;
                NextAvailableColumn++;
            }
        }
        catch (Exception ex)
        {
            AppLog.Show(ex.Message, "BindDataToColumns - " + kvp.Key, MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
    }

}

private void ApplyFormulas()
{
    Range rng;
    int iCol;

    // Book Invoice
    iCol = this.BookInvoice.Column;
    rng = this.Range[this.Cells[StartingDataRow, iCol], this.Cells[LastRow, iCol]];
    rng.Select();
    rng.FillDown();

    // Your Cost
    iCol = this.YourCost.Column;
    rng = this.Range[this.Cells[StartingDataRow, iCol], this.Cells[LastRow, iCol]];
    rng.Select();
    rng.FillDown();
}

private void ApplyFormatting()
{
    // For some reason Hyperlink columns get reset
    this.IPage_Link.Font.Name = this.EAN.Font.Name;
    this.IPage_Link.Font.Size = this.EAN.Font.Size;

    ((Range)this.Cells[StartingDataRow, 1]).EntireRow.Select();
    Application.ActiveWindow.FreezePanes = true;
}