如何使用 Datatable C# 跳过 =<2 空白行？

Question

允许用户完全留空一两行。如果行中的任何单元格已被填写，则请用户填写其余单元格，并告诉他们该单元格位于哪个 row/line 中。

理想的实现逻辑是：如果找到空行，则跳过它并转到下一行，并查找是否还有任何单元格需要填充，如果找到空行，则跳过转到下一个。

我有两个 class。下面的 class 确定该行是否完全为空。

 public bool isRowEmpty(DataTable dt, int index)
    {
        // check if index exists, if not returns false
        // it will means that the row is "not empty"
        if (index >= dt.Rows.Count || index < 0)
            return false;

        // Get row
        DataRow dr = dt.Rows[index];

        // Amount of empty columns
        int emptyQt = 0;
        // Run thourgh columns to check if any of them are empty
        for (int i = 0; i < dr.ItemArray.Length; i++)
        {
            // If empty, add +1 to the amount of empty columns
            if (string.IsNullOrWhiteSpace(dr.ItemArray[i].ToString()))
            emptyQt++;

        }
        // if the amount of empty columns is equals to the amount of 
        //columns, it means that the whole row is empty
        return emptyQt == dr.Table.Columns.Count;
    }

使用上面的class，我确定下一个class中哪一行是空的，如果发现空我将跳过并转到下一行，如果发现不为空则查找任何单元格没有填满。

但是下面的代码并没有跳过完整的空白行。有什么见解吗？

 public DataValidationModel Validate(DataTable data, IList<FieldModel> fields)
        {
            var fieldsSorted = fields.Where(f => f.IsInTaxonomy == true).OrderBy(f => f.TaxonomyPosition).ToList();

            var model = new DataValidationModel()
            {
                Errors = new List<RowErrorModel>()
            };

            int rowCounter = 7;

            for (int i =0; i < data.Rows.Count - 1; i++) //Rows.Count - 1, 
            {
                if (!isRowEmpty(data, rowCounter-1) && isRowEmpty(data, rowCounter) && !isRowEmpty(data, rowCounter + 1))
                    i+=1;


                if (data.Rows[rowCounter][0] == DBNull.Value || String.IsNullOrWhiteSpace(data.Rows[i][0].ToString()))
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "The name cannot be blank."
                    });

                }
                if (data.Rows[rowCounter]["Site"] == DBNull.Value || String.IsNullOrWhiteSpace(data.Rows[i]["Site"].ToString()))
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "Site is required."
                    });

                }

                if (data.Rows[rowCounter]["start date"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "start date is required."
                    });

                }

                if (data.Rows[rowCounter]["end date"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "end date is required."
                    });

                }

                if (data.Rows[rowCounter]["Placement Type"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "Placement Type is required."
                    });

                }
                if (data.Rows[rowCounter]["Channel"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "Channel is required."
                    });

                }

                if (data.Rows[rowCounter]["Environment"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "Environment is required."
                    });

                }

                if (data.Rows[rowCounter]["rate type"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "rate is required when a rate type is not blank."
                    });

                }

                if (data.Rows[rowCounter]["units"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "units is required when a rate type is not blank."
                    });

                }
                if (data.Rows[rowCounter]["cost"] == DBNull.Value)
                {
                    model.Errors.Add(new RowErrorModel()
                    {
                        Row = rowCounter,
                        Error = "cost is required when a rate type is not blank."
                    });

                }


      model.Errors = model.Errors.OrderBy(f => f.Row).ToList();

            return model;
        }

Answer 1

为什么你不能使用 continue 一旦你发现根据你的评论

该行是空的

        for (int i =0; i < data.Rows.Count - 1; i++) //Rows.Count - 1, 
        {
            if (!isRowEmpty(data, rowCounter-1) && isRowEmpty(data, rowCounter) && !isRowEmpty(data, rowCounter + 1))
                continue; // this one here, which will jump to next iteration

Answer 2

我给你看一个与你的附加逻辑无关的例子。

public bool isRowEmpty(DataTable dt, int index)
{
    DataRow row = dt.Rows[index];
    return dt.Columns.Cast<DataColumn>()
        .All(c => row.IsNull(c) || string.IsNullOrWhiteSpace(row[c].ToString()));
}

在 foreach 或 for 循环中你只需要使用 continue:

for (int i = 0; i < data.Rows.Count; i++)
{
    if (isRowEmpty(data, i))
        continue;
    // ...
}

如何使用 Datatable C# 跳过 =<2 空白行？

How to skip =<2 blank row using Datatable C#?

c#

datatable

datarow