将超链接值从C#粘贴到Access [英] Pasting a hyperlink value from C# to Access

问题描述

我正在将文件上传到\ temp \，但是我想通过Access内部给定列中的超链接来访问它.我可以成功地将字符串粘贴到超链接字段，但是字符串和文件本身之间没有链接.

I am uploading a file to \temp\ but I want to access it through a hyperlink in a given column inside Access. I can successfully paste the string to the hyperlink field, but there´s no link between the string and the file itself.

我试图将粘贴的网站地址从浏览器复制到Access，令人惊讶的是，超链接与字符串"一起粘贴了

I tried to copy paste a website address from a browser to Access, surprisingly the hyperlink is pasted along with the "string"

//upload arquivo
string conexaoAccess2 = ConfigurationManager.ConnectionStrings["conexaoAccess"].ToString();
using (OleDbConnection conexaodb1 = new OleDbConnection(conexaoAccess2))
{
    conexaodb1.Open();

    Random r = new Random();
    int n = r.Next();
    // pega somente nome 
    string[] f = camArq.Split('\\');
    string fn = f[(f.Length) - 1];
    string fullDest = @"C:\temp\" + nomeArqnoExt + n + fileExtension0;
    string q = "UPDATE tbl_reg SET Campo1 = @campo WHERE nome_user = @nome1";

    //copia arquivo para a pasta destino
    File.Copy(camArq, fullDest, true);

    //to save to the database
    OleDbCommand cmd = new OleDbCommand(q, conexaodb1);
    var parCamp = cmd.CreateParameter();
    parCamp.ParameterName = "campo";
    parCamp.DbType = DbType.String;
    parCamp.Value = fullDest;
    cmd.Parameters.Add(parCamp);

    var parNome1 = cmd.CreateParameter();
    parNome1.ParameterName = "nome1";
    parNome1.DbType = DbType.String;
    parNome1.Value = mdl.nome;
    cmd.Parameters.Add(parNome1);

    cmd.ExecuteNonQuery();
}

我希望将字符串复制为超链接，但是，没有DbType假定这种数据类型吗?实际结果是:我可以成功将文件路径粘贴到该字段，但是该字段不包含指向任何内容的超链接:

I expect the string to be copied as an hyperlink, nevertheless, there´s no DbType that assumes this type of data, is there? The actual results are: I can successfully paste the file path to the field, but the field contains no hyperlink to anything whatsoever:

推荐答案

访问超链接类型字段所需要的值由3个部分组成，这些部分由#个字符分隔:displaytext#path#subreference.选项:

Access Hyperlink type field requires value that is composed of 3 parts separated by # character: displaytext#path#subreference. Options:

1. 如果在Access表设计中使用超链接类型"字段，请在字符串中包含#个字符以进行保存.

1. If using Hyperlink type field in Access table design, include # characters in string to save.

只需使用文本字段保存不包含#个字符的路径字符串，然后在代码中使用FollowHyperlink方法或将字符串格式设置为带有连接表达式的超链接结构:"#" & [fieldname] & "#"-在查询或文本框ControlSource中计算并将文本框IsHyperlink属性设置为是的.

Just use a text field to save path string without # characters then use FollowHyperlink method in code or format string to hyperlink structure with concatenation expression: "#" & [fieldname] & "#" - calculate in query or textbox ControlSource and set textbox IsHyperlink property to yes.

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