空值DataGridView

Question

大家早上好

我对dgv有点小问题。我试图用一个函数的结果填充它，该函数显示文件夹中文件的名称和每个文件的行数。

但由于某种原因我在数据网格上有一个空值，我不知道如何删除它。我一直这样做，没有对vb.net或编码的任何知识，所以任何帮助都会大大贬值

以下是代码：

Imports System
Imports System.Linq
Imports System.Collections
Imports System.IO
Imports System.IO.StreamReader
Imports System.IO.DirectoryInfo

Public Class MainForm

    'asigna la var como datatable
    Dim results1 As New DataTable

    Private Sub Boton_Buscar_Click(sender As System.Object, e As System.EventArgs) Handles Boton_Buscar.Click

        'muestra el dialogo y guarda el dir
        FBD1.ShowDialog()
        TextBox1.Text = FBD1.SelectedPath
        FSW1.Path = TextBox1.Text

        'indica el datasource al datagrid
        Try
            DGV1.DataSource = GetLineCount()

        Catch ex As Exception
            MsgBox(ex.Message)
        End Try

    End Sub

    'devuelve archivos y su num de lineas
    Public Function GetLineCount() As DataTable

        results1.Columns.Add(0)
        results1.Columns.Add(1)


        'array para los tipos de archivo
        Dim MyFileArray As [String]() = New [String](7) {"*.txt", "*.doc", "*.docx", "*.odt", "*.pdf", "*.rtf", _
                                                       "*.csv", "*.vb"}

        'array para los directorios
        Dim MyDirectoryArray As [String]() = New [String](0) {TextBox1.Text}

        ' loop directorios
        For Each sd As [String] In MyDirectoryArray
            Dim dir As New DirectoryInfo(sd)

            'loop los tipos de archivos
            For Each sFileType As [String] In MyFileArray

                'loop los archivos ante el contador
                For Each file__1 As FileInfo In dir.GetFiles(sFileType)

                    Dim LineCount = System.IO.File.ReadAllLines(file__1.FullName).Count()

                    'alimenta el datagrid con los datos nuevos
                    results1.Rows.Add()
                    results1.Rows.Add.Item(0) = "FileName: " & file__1.FullName
                    results1.Rows.Add.Item(1) = "LineCount: " & LineCount

                Next

            Next

        Next

        Return results1

    End Function

End Class

And here is the output im getting:

非常欢迎任何帮助，祝你有个美好的一天

Answer 1

您获取空值的原因是您尝试一次按一个单元格添加行。

而不是

results1.Rows.Add()
results1.Rows.Add.Item(0) = "FileName: " & file__1.FullName
results1.Rows.Add.Item(1) = "LineCount: " & LineCount

尝试

results1.Rows.Add("FileName: " & file__1.FullName, "LineCount: " & LineCount)

您当前的代码每次添加三行而不是1行：首先是空行，然后是填充了单元格（0）的行，然后是null，然后是一行为null，然后填充单元格（1）。