Question

正在构建一个将excel数据导入到sql数据库中的应用程序，但无法从具有不同于通常文件名的excel表中导入excel数据的

Sheet1，Sheet2，Sheet *

所以我想我会尝试从组合框中读取工作表名称，但无法从私有方法访问在公共方法中声明的变量。

public void OpenFile()
    {
        OpenFileDialog od = new OpenFileDialog();
        od.Filter = "Excell|*.xls;*.xlsx;";
        DialogResult dr = od.ShowDialog();
        if (dr == DialogResult.Abort)
            return;
        if (dr == DialogResult.Cancel)
            return;

        if (!string.IsNullOrEmpty(od.FileName))

        {
            //This is the variable am trying to access
            string file = od.FileName.ToString();
            OleDbcon = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + od.FileName + ";Extended Properties=Excel 12.0;");

            OleDbcon.Open();

            DataTable dt = OleDbcon.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);

            OleDbcon.Close();

            cbosheet.Items.Clear();




            for (int i = 0; i < dt.Rows.Count; i++)

            {

                String sheetName = dt.Rows[i]["TABLE_NAME"].ToString();

                sheetName = sheetName.Replace(@"'", "");
                sheetName = sheetName.Replace("$", "");

                cbosheet.Items.Add(sheetName);

            }

        }

    }

正在尝试在此方法中使用变量 file

private void toolStripButton4_Click(object sender, EventArgs e)
    {
       bulkcopy(text);

    }

将在此处使用

  public void bulkcopy(string excelFilePath)
    {
        string ssqltable = "Member";
        string myexceldataquery = "select [Employer Number],[Employer Name],[CODE],[No_of Employees],[VALUE],[Last month contributed for] from [" + cbosheet.Text + "$]";
        try
        {
            string excelconn = @"provider=microsoft.ACE.OLEDB.12.0;data source=" + excelFilePath +
            ";extended properties=" + "\"excel 12.0;hdr=yes;\"";
 ...

Answer 1

为文件设置public属性：

public string CurrentFile { get; set; }

然后在您的代码中：

//This is the variable am trying to access
CurrentFile = od.FileName.ToString();

和：

private void toolStripButton4_Click(object sender, EventArgs e)
{
   bulkcopy(CurrentFile);
}

我如何才能访问在公共方法中声明的变量以便在私有方法中使用它

1 个答案: