找了兩三篇文章再加一點修正才組出來的, 記錄一下, 要用 iTextSharp 哦.
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
---
string oldFile = Server.MapPath("/Content/PDF/300000419_20160929162658862.pdf"); //"oldFile.pdf";
string newFile = oldFile.Replace(".pdf", "_New11.pdf");
// open the reader
PdfReader reader = new PdfReader(oldFile);
Rectangle size = reader.GetPageSizeWithRotation(1);
Document document = new Document(size);
int NumberOfPages = reader.NumberOfPages;
// open the writer
FileStream fs = new FileStream(newFile, FileMode.Create, FileAccess.Write);
PdfWriter writer = PdfWriter.GetInstance(document, fs);
document.Open();
// the pdf content
PdfContentByte cb = writer.DirectContent;
string text = "Watermark...";
string windir = Environment.GetEnvironmentVariable("windir");
Chunk textAsChunk = new Chunk(text, new Font(BaseFont.CreateFont(windir + "\\Fonts\\mingliu.ttc,0", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED), 20, Font.NORMAL, new BaseColor(255,0,0)));
// create the new page and add it to the pdf
for (int i = 1; i<= NumberOfPages; i++)
{
if(i > 1)
{
document.NewPage();
}
ColumnText.ShowTextAligned(cb, Element.ALIGN_LEFT, new Phrase(textAsChunk), 0, 0, 0);
PdfImportedPage page = writer.GetImportedPage(reader, i);
cb.AddTemplate(page, 0, 0);
}
// close the streams and voilá the file should be changed :)
document.Close();
fs.Close();
writer.Close();
reader.Close();
Response.Write(newFile + "<br>");
Response.Write(NumberOfPages + "<br>");
Bike, 2016/9/29 下午 06:23:59
--抓所有的 Table
Select * from INFORMATION_SCHEMA.TABLES
--抓所有的 COLUMNS
Select * from INFORMATION_SCHEMA.COLUMNS
--抓欄位的 Description
select
st.name [Table],
sc.name [Column],
sep.value [Description]
from sys.tables st
inner join sys.columns sc on st.object_id = sc.object_id
left join sys.extended_properties sep on st.object_id = sep.major_id
and sc.column_id = sep.minor_id
and sep.name = 'MS_Description'
where st.name = 'TableName'
and sc.name = 'ColumnName'
--修改欄位的 Description.
EXEC sp_updateextendedproperty
@name = N'MS_Description', @value = 'Your description',
@level0type = N'Schema', @level0name = 'dbo',
@level1type = N'Table', @level1name = 'TableName',
@level2type = N'Column', @level2name = 'Name';
EXEC sp_addextendedproperty
@name = N'MS_Description', @value = 'Code description',
@level0type = N'Schema', @level0name = 'dbo',
@level1type = N'Table', @level1name = 'TableName',
@level2type = N'Column', @level2name = 'ColumnName';
--新增 Table 的 extendedproperty
EXEC sp_addextendedproperty
@name = N'Description', @value = 'Hey, here is TableName description!',
@level0type = N'Schema', @level0name = 'dbo',
@level1type = N'Table', @level1name = 'TableName'
GO
--修改 Table 的 extendedproperty
EXEC sp_updateextendedproperty
@name = N'Description', @value = 'Hey, here is my description! 123',
@level0type = N'Schema', @level0name = 'dbo',
@level1type = N'Table', @level1name = 'TableName'
GO
--讀取 Extended Property
SELECT sys.objects.name AS TableName, ep.name AS PropertyName,
ep.value AS Description
FROM sys.objects
CROSS APPLY fn_listextendedproperty(default,
'SCHEMA', schema_name(schema_id),
'TABLE', name, null, null) ep
WHERE sys.objects.name NOT IN ('sysdiagrams')
ORDER BY sys.objects.name
--讀取 Column 的 Description
SELECT objtype, objname, name, value
FROM fn_listextendedproperty (NULL, 'schema', 'dbo', 'table', 'TableName', 'column', default);
GO
--讀取特定 Table 的 Description
SELECT *
FROM fn_listextendedproperty (NULL, 'schema', 'dbo', 'table', 'TableName', default, default);
GO
--讀取 所有 Table 的 Description
SELECT *
FROM fn_listextendedproperty (NULL, 'schema', 'dbo', 'table', default, default, default);
GO
--新增或修改資料表說明
IF not exists(SELECT * FROM ::fn_listextendedproperty (NULL, 'user', 'dbo', 'table', '資料表名稱', NULL, NULL))
BEGIN
exec sp_addextendedproperty 'MS_Description', '資料表說明', 'user', 'dbo', 'table', '資料表名稱'
END
ELSE
BEGIN
exec sp_updateextendedproperty 'MS_Description', '資料表說明', 'user', 'dbo', 'table', '資料表名稱'
END
--新增或修改欄位說明
IF not exists(SELECT * FROM ::fn_listextendedproperty (NULL, 'user', 'dbo', 'table', '資料表名稱', 'column', '欄位名稱'))
BEGIN
exec sp_addextendedproperty 'MS_Description', '欄位說明', 'user', 'dbo', 'table', '資料表名稱', 'column', '欄位名稱'
END
ELSE
BEGIN
exec sp_updateextendedproperty 'MS_Description', '欄位說明', 'user', 'dbo', 'table', '資料表名稱', 'column', '欄位名稱'
END
Bike, 2016/6/29 下午 04:42:25