Question

我正在尝试将标头添加到CSV文件中，作为标题，我希望在WriteLine中使用变量名称。

这里有我的代码：

using (StreamWriter file = new StreamWriter(fs))                    
{
    for (int s = 0; s < pr.Length; ++s)
    {
        string[] UsersIDS = new string[] {""};
        UsersIDS = db.GetUsersList(pr[s].ProjectID);
        file.WriteLine(
             pr[s].ProjectID + '"' + ',' + 
             '"' +  pr[s].ProjectTitle + '"' + ',' + 
             pr[s].PublishStatus + '"' + ',' + 
             UsersIDS.Length); 
    }
}

Answer 1

使用常量字符串的常规WriteLine似乎就是你所追求的（除非你想通过反射或其他方式获取列的名称）：

using (StreamWriter file = new StreamWriter(fs))                    
{
    file.WriteLine( "ProjectID,ProjectTitle,PublishStatus,UsersIDS_Length"); 

    for (int index = 0; index < pr.Length; index++)
    {
        var usersIds = db.GetUsersList(pr[s].ProjectID);
        file.WriteLine("{0},\"{1}\",{2},{3}",
           pr[s].ProjectID, pr[s].ProjectTitle,
           pr[s].PublishStatus, usersIds.Length); 
    }
}

（听起来你也想在标题周围引用...其余的引号看起来不平衡。）

Answer 2

我建议您进行以下修改

using (StreamWriter file = new StreamWriter(fs))                    
{
    file.WriteLine("ProjectID, ProjectTitle,PublishStatus,Length");
    for (int s = 0; s < pr.Length; ++s)
    {
        string[] UsersIDS = new string[] {""};
        UsersIDS = db.GetUsersList(pr[s].ProjectID);
        file.WriteLine( pr[s].ProjectID + '"' + ',' + '"' + pr[s].ProjectTitle + '"' + ',' + pr[s].PublishStatus + '"' + ',' + UsersIDS.Length); 

}//end of for

使用StreamWriter将标头添加到CSV输出文件中

2 个答案: