c#讀寫excel文件使用示例

更新時(shí)間：2014年02月21日 10:06:20 作者：

這篇文章主要介紹了c#讀寫excel文件使用示例,需要的朋友可以參考下

因?yàn)橹С謈sv,所以就一塊寫上了
Workbook,Worksheet using Aspose.Cells(第三方)

把Excel讀取到屬性對(duì)象列表,需要傳入對(duì)象類型和文件路徑.
例:
List<PropSetCurrency> currencyList = this.GetObjectList<PropSetCurrency>(filePath);
注:Excel的表頭需要和對(duì)象名對(duì)應(yīng)(可無序),且第一列不能為空

把屬性對(duì)象列表保存到Excel,需要傳入對(duì)象列表和保存的文件完整路徑.
例:
this.SetExcelList(currencyList,"c://currencyList.excel");

復(fù)制代碼代碼如下:

/// <summary>
/// 從Excel獲取數(shù)據(jù)
/// </summary>
/// <typeparam name="T">對(duì)象</typeparam>
/// <param name="filePath">文件完整路徑</param>
/// <returns>對(duì)象列表</returns>
public List<T> GetObjectList<T>(string filePath) where T : new()
{
    List<T> list = new List<T>();
    if (!filePath.Trim().EndsWith("csv") && !filePath.Trim().EndsWith("xlsx"))
    {
return list;
    }

    Type type = typeof(T);
    Workbook workbook = new Workbook(filePath);
    Worksheet sheet = workbook.Worksheets[0];

// 獲取標(biāo)題列表
var titleDic = this.GetTitleDic(sheet);

    // 循環(huán)每行數(shù)據(jù)
    for (int i = 1; i < int.MaxValue; i++)
    {
// 行為空時(shí)結(jié)束
if (string.IsNullOrEmpty(sheet.Cells[i, 0].StringValue))
{
    break;
}

T instance = new T();

// 循環(huán)賦值每個(gè)屬性
foreach (var item in type.GetProperties())
{
    if (titleDic.ContainsKey(item.Name))
    {
string str = sheet.Cells[i, titleDic[item.Name]].StringValue;
if (!string.IsNullOrEmpty(str))
{
    try
    {
// 根據(jù)類型進(jìn)行轉(zhuǎn)換賦值
if (item.PropertyType == typeof(string))
{
    item.SetValue(instance, str);
}
else if (item.PropertyType.IsEnum)
{
    item.SetValue(instance, int.Parse(str));
}
else
{
    MethodInfo method = item.PropertyType.GetMethod("Parse", new Type[] { typeof(string) });
    object obj = null;
    if (method != null)
    {
obj = method.Invoke(null, new object[] { str });
item.SetValue(instance, obj);
    }
}
    }
    catch (Exception)
    {
// 獲取錯(cuò)誤
    }
}
    }
}

list.Add(instance);
}

return list;
}

/// <summary>
/// 把對(duì)象List保存到Excel
/// </summary>
/// <typeparam name="T">對(duì)象</typeparam>
/// <param name="objList">對(duì)象列表</param>
/// <param name="saveFilePath">保存文件的完整路徑,包括文件類型</param>
public void SetExcelList<T>(List<T> objList, string saveFilePath)
{
    if (!saveFilePath.Trim().EndsWith("csv") && !saveFilePath.Trim().EndsWith("xlsx"))
    {
return;
    }

Workbook workbook = new Workbook();
Worksheet sheet = workbook.Worksheets[0];

// 凍結(jié)第一行
sheet.FreezePanes(1, 1, 1, 0);

    // 循環(huán)插入每行
    int row = 0;
    foreach (var obj in objList)
    {
int column = 0;
var properties = obj.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.DeclaredOnly);
if (row == 0)
{
    foreach (var titName in properties)
    {
sheet.Cells[0, column].PutValue(titName.Name);
column++;
    }

row++;
}

// 循環(huán)插入當(dāng)前行的每列
column = 0;
foreach (var property in properties)
{
    var itemValue = property.GetValue(obj);
    sheet.Cells[row, column].PutValue(itemValue.ToString());
    column++;
}

row++;
}

workbook.Save(saveFilePath);
}

/// <summary>
/// 獲取標(biāo)題行數(shù)據(jù)
/// </summary>
/// <param name="sheet">sheet</param>
/// <returns>標(biāo)題行數(shù)據(jù)</returns>
private Dictionary<string, int> GetTitleDic(Worksheet sheet)
{
    Dictionary<string, int> titList = new Dictionary<string, int>();
    for (int i = 0; i < int.MaxValue; i++)
    {
if (sheet.Cells[0, i].StringValue == string.Empty)
{
    return titList;
}

titList.Add(sheet.Cells[0, i].StringValue, i);
}

return titList;
}

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