C# 导入带有“0”的文件&引用;作为定界符
我试图读取的文件如下所示:C# 导入带有“0”的文件&引用;作为定界符,c#,datagridview,C#,Datagridview,我试图读取的文件如下所示: // Simple: quotation "..." e.g. "123,456",789 is not implemented private static DataTable FromCsvSimple(string path, char delimiter = ',') { // Try avoiding ReadAllLines; use ReadLines // Where - let's skip empty lines (if any) v
// Simple: quotation "..." e.g. "123,456",789 is not implemented
private static DataTable FromCsvSimple(string path, char delimiter = ',') {
// Try avoiding ReadAllLines; use ReadLines
// Where - let's skip empty lines (if any)
var lines = File
.ReadLines(path)
.Where(line => !string.IsNullOrWhiteSpace(line))
.Select(line => line.Split(delimiter));
DataTable result = new DataTable();
foreach (string[] items in lines) {
// Do we have any columns to add?
for (int c = 0; c < items.Length; ++c)
while (c >= result.Columns.Count)
result.Columns.Add();
result.Rows.Add(items);
}
return result;
}
...
DataTable myTable = FromCsvSimple(@"c:\MyCsv.csv", ';');
123h123m,123123
我有以下代码来尝试阅读:
public DataTable DataTableFromTextFile(string location, char delimiter = ',')
{
DataTable result;
string[] LineArray = File.ReadAllLines(path);
result = FormDataTable(LineArray, delimiter);
return result;
}
private static DataTable FormDataTable(string[] LineArray, char delimiter)
{
DataTable dt = new DataTable();
AddColumnToTable(LineArray, delimiter, ref dt);
AddRowToTable(LineArray, delimiter, ref dt);
return dt;
}
private static void AddRowToTable(string[] valueCollection, char delimiter, ref DataTable dt)
{
for (int i = 1; i < valueCollection.Length; i++)
{
string[] values = valueCollection[i].Split(delimiter);
DataRow dr = dt.NewRow();
for (int j = 0; j < values.Length; j++)
{
dr[j] = values[j];
}
dt.Rows.Add(dr);
}
}
private static void AddColumnToTable(string[] columnCollection, char delimiter, ref DataTable dt)
{
string[] columns = columnCollection[0].Split(delimiter);
foreach (string columnName in columns)
{
DataColumn dc = new DataColumn(columnName, typeof(string));
}
}
public DataTable DataTableFromTextFile(字符串位置,字符分隔符=',')
{
数据表结果;
字符串[]LineArray=File.ReadAllLines(路径);
结果=FormDataTable(线性阵列,分隔符);
返回结果;
}
私有静态数据表FormDataTable(字符串[]线性数组,字符分隔符)
{
DataTable dt=新的DataTable();
AddColumntTable(线性阵列、分隔符、参考数据);
AddRowToTable(线性阵列、分隔符、ref dt);
返回dt;
}
私有静态void addrowtable(字符串[]valueCollection,字符分隔符,ref DataTable dt)
{
for(int i=1;i
但它似乎还不起作用。我尝试过改变一些东西,但后来又在DataGridView(称为infoTabelle)中添加了空格。
有人能帮我解决问题吗
****编辑
现在都修好了。我改变了将分离文本放入DataGridView的方法。现在像个魔术师一样工作。**您正在寻找这样的东西:
// Simple: quotation "..." e.g. "123,456",789 is not implemented
private static DataTable FromCsvSimple(string path, char delimiter = ',') {
// Try avoiding ReadAllLines; use ReadLines
// Where - let's skip empty lines (if any)
var lines = File
.ReadLines(path)
.Where(line => !string.IsNullOrWhiteSpace(line))
.Select(line => line.Split(delimiter));
DataTable result = new DataTable();
foreach (string[] items in lines) {
// Do we have any columns to add?
for (int c = 0; c < items.Length; ++c)
while (c >= result.Columns.Count)
result.Columns.Add();
result.Rows.Add(items);
}
return result;
}
...
DataTable myTable = FromCsvSimple(@"c:\MyCsv.csv", ';');
//简单:引用“…”例如“123456”,789未实现
私有静态数据表FromCsvSimple(字符串路径,字符分隔符=','){
//尽量避免使用ReadAllLines;使用ReadLines
//Where-让我们跳过空行(如果有)
变量行=文件
.ReadLines(路径)
.Where(line=>!string.IsNullOrWhiteSpace(line))
.Select(line=>line.Split(分隔符));
DataTable结果=新DataTable();
foreach(行中的字符串[]项){
//我们有没有要添加的列?
对于(int c=0;c=result.Columns.Count)
result.Columns.Add();
结果.行.添加(项);
}
返回结果;
}
...
DataTable myTable=FromCsvSimple(@“c:\MyCsv.csv”,“;”);
您会遇到哪些错误?“似乎不起作用”在这件事上对你毫无帮助。顺便说一句,欢迎光临!我建议您选择并阅读。顺便说一句:ref DataTable dt
-为什么您认为这里需要ref
?在代码中添加一些单元测试,以确保每个方法都能按预期工作。分别测试数据表的拆分和验证。您是否从中获得了有效的DataTable?我添加了一些调试点,它读取文件时没有任何问题,但无法将其添加到DataGridView。我现在都修好了。