C# 如何从DataTable中删除空行

我正在将数据从Excel工作表导入数据库。Excel工作表包含很少的空行，我想删除这些空行，然后将清除的数据插入数据库。
我通过引用其他代码编写了一个代码，这是用于插入值的代码：

OleDbConnection cnn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + txtExcelFile.Text + "';Extended Properties= 'Excel 8.0;HDR=Yes;IMEX=1'");
//DataTable dt = new DataTable();

try
{
    cnn.Open();
    OleDbDataAdapter data = new OleDbDataAdapter("select * from [Customers$]", cnn);
    data.Fill(dsExcel);
    dgvCustomers.ColumnHeadersVisible = false;

    SqlConnection connection = new SqlConnection("Data Source=COMPUTER-8EB749;Initial Catalog=KITS;Integrated Security=true");
    connection.Open();
    for (int i = 0; i < dsExcel.Tables[0].Rows.Count; i++)
    {
        string ID = ds.Tables[0].Rows[i][0].ToString();
        Int16 CustID = Convert.ToInt16(ID);
        string CustName = dsExcel.Tables[0].Rows[i][1].ToString();
        string CardScheme = dsExcel.Tables[0].Rows[i][2].ToString();
        string Outlet = dsExcel.Tables[0].Rows[i][3].ToString();
        string TerminalNum = dsExcel.Tables[0].Rows[i][4].ToString();
        Int32 Terminal = Convert.ToInt32(TerminalNum);
        string Date1 = dsExcel.Tables[0].Rows[i][5].ToString();
        DateTime Date = Convert.ToDateTime(Date1);
        string Time = dsExcel.Tables[0].Rows[i][6].ToString();
        DateTime DateTime = Convert.ToDateTime(Time);
        string Amount1 = ds.Tables[0].Rows[i][7].ToString();
        double Amount = Convert.ToDouble(Amount1);

        SqlCommand com = new SqlCommand("insert into Customer(CustID,CustName,CardScheme,Outlet,TerminalNum,TranDate,TranDateTime,Amount) values ('" + CustID + "','" + CustName + "','" + CardScheme + "','" + Outlet + "','" + Terminal + "','" + Date + "','" + DateTime + "','" + Amount + "')", connection);
        com.ExecuteNonQuery();
    }
    connection.Close();
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}
finally
{
    MessageBox.Show("Data Inserted Successfully.");
}

OleDbConnection cnn=new-OleDbConnection（@“Provider=Microsoft.Jet.OLEDB.4.0；数据源=”“+txtExcelFile.Text+”；扩展属性=“Excel 8.0；HDR=Yes；IMEX=1”）；
//DataTable dt=新的DataTable（）；
尝试
{
cnn.Open（）；
OleDbDataAdapter数据=新的OleDbDataAdapter（“从[Customers$]中选择*”，cnn）；
数据填充（dsExcel）；
dgvCustomers.ColumnHeadersVisible=false；
SqlConnection=newsqlconnection（“数据源=COMPUTER-8EB749；初始目录=KITS；集成安全=true”）；
connection.Open（）；
对于（int i=0；i

有人能告诉我如何删除空行以便只插入数据吗

---

数据库本身有空行？？这很奇怪。在执行select查询时，如果主键列不为NULL，则可能会对其进行过滤

为什么不在插入空行之前直接忽略它们呢

if(string.IsNullOrEmpty(ID + CustName + CardScheme /*.. and so on */))
{
    continue;
}

像这样：

for (int i = 0; i < dsExcel.Tables[0].Rows.Count; i++)
{
    string ID = ds.Tables[0].Rows[i][0].ToString();
    Int16 CustID = Convert.ToInt16(ID);
    string CustName = dsExcel.Tables[0].Rows[i][1].ToString();
    string CardScheme = dsExcel.Tables[0].Rows[i][2].ToString();
    string Outlet = dsExcel.Tables[0].Rows[i][3].ToString();
    string TerminalNum = dsExcel.Tables[0].Rows[i][4].ToString();
    Int32 Terminal = Convert.ToInt32(TerminalNum);
    string Date1 = dsExcel.Tables[0].Rows[i][5].ToString();
    DateTime Date = Convert.ToDateTime(Date1);
    string Time = dsExcel.Tables[0].Rows[i][6].ToString();
    DateTime DateTime = Convert.ToDateTime(Time);
    string Amount1 = ds.Tables[0].Rows[i][7].ToString();
    double Amount = Convert.ToDouble(Amount1);

    /*** Add this if-statement to you code! ***/
    if(string.IsNullOrEmpty(ID + CustName + CardScheme + Outlet + TerminalNum + Date1 + Time + Amount1))
    {
        continue;
    }

    SqlCommand com = new SqlCommand("insert into Customer(CustID,CustName,CardScheme,Outlet,TerminalNum,TranDate,TranDateTime,Amount) values ('" + CustID + "','" + CustName + "','" + CardScheme + "','" + Outlet + "','" + Terminal + "','" + Date + "','" + DateTime + "','" + Amount + "')", connection);
    com.ExecuteNonQuery();
}

for（int i=0；i

试试这个

public bool InsertRowsToDataBase()
{
    try
    {
        DataTable excelTable = new DataTable();

        string connString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source='" + txtExcelFile.Text + "';Extended Properties= 'Excel 8.0;HDR=Yes;IMEX=1'";
        using (OleDbConnection cnn = new OleDbConnection(connString))
        {
            string query = "select * from [Customers$]";
            using (OleDbDataAdapter data = new OleDbDataAdapter(query, cnn))
            {
                data.Fill(excelTable);
            }
        }
        dgvCustomers.ColumnHeadersVisible = false;

        connString = "Data Source=COMPUTER-8EB749;Initial Catalog=KITS;Integrated Security=true";
        using (SqlConnection connection = new SqlConnection(connString))
        {
            connection.Open();
            for (int i = 0; i < excelTable.Rows.Length; i++)
            {
                //takes from the 3rd row
                if (i > 1)
                {
                    DataRow row = excelTable.Rows[i];
                    object ID = row[0];
                    if (ID != null && !String.IsNullOrEmpty(ID.ToString().Trim()))
                    {
                        Int16 CustID = Convert.ToInt16(ID);
                        string CustName = row[1].ToString();
                        string CardScheme = row[2].ToString();
                        string Outlet = row[3].ToString();
                        string TerminalNum = row[4].ToString();
                        Int32 Terminal = Convert.ToInt32(TerminalNum);
                        string Date1 = row[5].ToString();
                        DateTime Date = Convert.ToDateTime(Date1);
                        string Time = row[6].ToString();
                        DateTime DateTime = Convert.ToDateTime(Time);
                        string Amount1 = row[7].ToString();
                        double Amount = Convert.ToDouble(Amount1);

                        string columnNames = "CustID,CustName,CardScheme,Outlet,TerminalNum,TranDate,TranDateTime,Amount";
                        string query = String.Format("insert into Customer(0}) values ('{1}', '{2}','{3}','{4}','{5}','{6}','{7}','{8}')",
                            columnNames, CustID, CustName, CardScheme, Outlet, Terminal, Date, DateTime, Amount);
                        using (SqlCommand com = new SqlCommand(query, connection))
                        {
                            com.ExecuteNonQuery();
                        }
                    }
                }
                //this is your last row. do whatever you want with this
                DataRow lastRow = excelTable.Rows[excelTable.Rows.Count - 1];
            }
        }
        return true;
    }
    catch (Exception exception)
    {
        Elmah.ErrorSignal.FromCurrentContext().Raise(exception);
        return false;
    }
}

public bool InsertRowsToDataBase（）
{
尝试
{
DataTable excelTable=新DataTable（）；
字符串connString=@“Provider=Microsoft.Jet.OLEDB.4.0；数据源='”“+txtExcelFile.Text+”；扩展属性='excel8.0；HDR=Yes；IMEX=1'；
使用（OLEDB连接cnn=新OLEDB连接（连接字符串））
{
string query=“从[客户$]中选择*”；
使用（OleDbDataAdapter数据=新的OleDbDataAdapter（查询，cnn））
{
数据填充（excelTable）；
}
}
dgvCustomers.ColumnHeadersVisible=false；
connString=“数据源=计算机-8EB749；初始目录=套件；集成安全性=真”；
使用（SqlConnection连接=新的SqlConnection（connString））
{
connection.Open（）；
for（int i=0；i1）
{
DataRow row=excelTable.Rows[i]；
对象ID=行[0]；
if（ID！=null&&！String.IsNullOrEmpty（ID.ToString（）.Trim（））
{
Int16 CustID=转换为Int16（ID）；
字符串CustName=行[1]。ToString（）；
字符串CardScheme=行[2]。ToString（）；
字符串出口=行[3]。ToString（）；
string TerminalNum=行[4]。ToString（）；
Int32 Terminal=Convert.ToInt32（TerminalNum）；
字符串Date1=行[5]。ToString（）；
DateTime日期=Convert.ToDateTime（日期1）；
字符串时间=行[6]。ToString（）；
DateTime DateTime=Convert.ToDateTime（时间）；
string Amount1=行[7]。ToString（）；
双倍金额=换算成双倍（金额1）；
string columnNames=“CustID、CustName、CardScheme、Outlet、TerminalNum、transdate、transdatetime、Amount”；
string query=string.Format（“插入到客户（0}）值（'{1}'，'{2
try
{
    OpenOleDBConnection();
    OleDbDataAdapter dataAdapter = new OleDbDataAdapter("select * from [" + SelectedSheet + "]", Connection);

    dataAdapter.Fill(DataTable);

    if ((DataTable != null) && (DataTable.Rows != null) && (DataTable.Rows.Count > 0))
    {
        List<System.Data.DataRow> removeRowIndex = new List<System.Data.DataRow>();
        int RowCounter = 0;
        foreach (System.Data.DataRow dRow in DataTable.Rows)
        {                            
            for(int index = 0; index < DataTable.Columns.Count; index++)
            {
                if (dRow[index] == DBNull.Value)  
                {
                    removeRowIndex.Add(dRow);
                    break;
                }
                else if (string.IsNullOrEmpty(dRow[index].ToString().Trim()))
                {
                    removeRowIndex.Add(dRow);
                    break;
                }
            }
            RowCounter++;
        }
        // Remove all blank of in-valid rows
        foreach (System.Data.DataRow rowIndex in removeRowIndex)
        {
            DataTable.Rows.Remove(rowIndex);
        }
    }
}
catch(Exception e)
{
    WPFMessageBox.Show(e.Message, Globalization.GetValue("Import_ImportOption_FormHeader"), WPFMessageBoxButtons.OK, WPFMessageBoxImage.Error);
}
finally
{
    CloseOleDBConnection();
}

dataTable = dataTable.Rows
    .Cast<DataRow>()
    .Where(row => !row.ItemArray.All(field => field is DBNull || 
                                     string.IsNullOrWhiteSpace(field as string)))
    .CopyToDataTable();

private DataTable StripEmptyRows(DataTable dt)
    {
        List<int> rowIndexesToBeDeleted = new List<int>();
        int indexCount = 0;
        foreach(var row in dt.Rows)
        {
            var r = (DataRow)row;
            int emptyCount = 0;
            int itemArrayCount = r.ItemArray.Length;
            foreach(var i in r.ItemArray) if(string.IsNullOrWhiteSpace (i.ToString())) emptyCount++;

            if(emptyCount == itemArrayCount) rowIndexesToBeDeleted.Add(indexCount);

            indexCount++;
        }

        int count = 0;
        foreach(var i in rowIndexesToBeDeleted)
        {
            dt.Rows.RemoveAt(i-count);
            count++;
        }

        return dt;
    }

public static DataTable RemoveEmptyRows(DataTable dt) 
{ 
    List removeRowIndex = new List(); 

    foreach (DataRow dRow in dt.Rows) 
    { 
        for (int index = 0; index < dt.Columns.Count; index++) 
        { 
            if (string.IsNullOrEmpty(dRow[index].ToString().Trim())) 
            { 
                removeRowIndex.Add(dRow); 
                break; 
            } 
            else if (dRow[index] == DBNull.Value) 
            { 
                removeRowIndex.Add(dRow); 
                break; 
            } 
        } 
    } 

    foreach (DataRow rowIndex in removeRowIndex) 
    { 
        dt.Rows.Remove(rowIndex); 
    } 

    return dt; 
}

Foreach(DataRow as row in datable.Rows) {
    var isEmpty = row.ItemArray.All(c => c is DBNull);
    if(!isEmpty) {
        //Your Logic
    }
}

dt.Load(cmd.ExecuteReader());
var x = dt.Rows.Cast<DataRow>()
   .Where(row => !Array.TrueForAll(row.ItemArray, value => 
   { return value.ToString().Length == 0; }
   ));

dt = x.CopyToDataTable();

private DataTable StripEmptyRows(DataTable dt)
        {
            List<int> rowIndexesToBeDeleted = new List<int>();
            int indexCount = 0;
            foreach(var row in dt.Rows)
            {
                var r = (DataRow)row;
                int emptyCount = 0;
                int itemArrayCount = r.ItemArray.Length;
                    foreach (var i in dr.ItemArray)
                    {
                        if (string.IsNullOrEmpty(i.ToString()) || string.IsNullOrWhiteSpace(i.ToString()))
                            emptyCount++;
                    }

                if(emptyCount == itemArrayCount) rowIndexesToBeDeleted.Add(indexCount);

                indexCount++;
            }

            int count = 0;
            foreach(var i in rowIndexesToBeDeleted)
            {
                dt.Rows.RemoveAt(i-count);
                count++;
            }

            return dt;
        }

dt = ds.Tables[tablename].Rows
    .Cast<DataRow>()
    .Where(row => !row.ItemArray.All(field => field is DBNull || 
           string.IsNullOrWhiteSpace(field as string ?? field.ToString())))
    .CopyToDataTable();
foreach (var column in dt.Columns.Cast<DataColumn>().ToArray())
    {
        if (dt.AsEnumerable().All(dr => dr.IsNull(column)))
            dt.Columns.Remove(column);
    }

DataTable dt = dt.Rows
                 .Cast<DataRow>()
                 .Where(row => !row.ItemArray.All(f => f is DBNull))
                 .CopyToDataTable();

DataTable dt = dt.Rows
                 .Cast<DataRow>()
                 .Where(row => !row.ItemArray.All(f => f is DBNull || 
                                  string.IsNullOrEmpty(f as string ?? f.ToString())))
                 .CopyToDataTable();

var rows = tbl.Rows.Cast<DataRow>()
                            .Where(row => !row.ItemArray.All(field => field is DBNull || String.IsNullOrWhiteSpace(field as string ?? field.ToString())));

if (rows.Any())
    tbl = rows.CopyToDataTable();