在ASP.NET中使用逗号后修剪字符串值，C＃ [英] Trim string value after comma in ASP.NET, C#

问题描述

public string CorrectedPicture(object container)
       {
           object devNumber = DataBinder.Eval(container, "ImageFileName");
           string ret = devNumber.ToString();

           //// Add picture link if needed.
           DataRow row = ((DataRowView)container).Row;
           object ImageFileName = row["ImageFileName"];

           string ImageFileName1 = ImageFileName.ToString();
           string[] values = ImageFileName1.Split(',');

           for (int i = 0; i <= 0; i++)
           {


               if (ImageFileName != DBNull.Value)
               {
                   string url = @"D:\NewOutlookFiles" + txtProjectId.Text + "/" + values[i].ToString();
                   string titleText = "Deviation" + values[i].ToString() + "Picture";
                   string link = "javascript: void openPicture('_" + values[i].ToString() + "', '" + titleText + "', '" + url + "')";
                   ret = "<a href=\x22" + link + "\x22>" + ret + "</a>";
               }
           }

           return ret;
       }

< asp：标签ID =lblPicturerunat =serverText ='<％＃this.CorrectedPicture（Container.DataItem）％>'

ItemStyle-wrap =trueItemStyle-Width =10px >





我的尝试：



我的ImageFileName列有多个以逗号分隔的值，并将值绑定到label。它工作正常，但问题是我想只将第一个值绑定到标签而不是所有值来自列

<asp:Label ID="lblPicture" runat="server" Text='<%# this.CorrectedPicture(Container.DataItem) %>'
ItemStyle-wrap="true" ItemStyle-Width="10px">


What I have tried:

My "ImageFileName" column has multiple values separated by comma , and binding values to label. it's working fine but problem is i want to bind only first value to the label not all the values from column

推荐答案

而是运行循环只需分配第一个值完成拆分后的数组。

要从ImageFileName获取第一个值，您可以执行以下操作 -

Instead running a loop just assign the first value in the array after you did the split.
To get the first value from the "ImageFileName", you can do something like following-

string imgfilename= ImageFileName1.Split(',')[0];

如果您怀疑可能的空条目或逗号开头的字符串，您可以使用 StringSplitOption [ ^ ]以防止此类结果值。

If you are suspecting of possible empty entries or a comma in the start of the string, you can make use of StringSplitOption[^] to prevent such values as result.

string imgfilename= ImageFileName1.Split(',',StringSplitOptions.RemoveEmptyEntries)[0];

希望，它会有所帮助。

请告诉我万一你需要进一步的帮助。



谢谢：）

Hope, it helps.
Please let me know in case you need further help on this.

Thanks :)

试试这个



在验证null和dbnull值后进行拆分

try this

do the split after validating null and dbnull values

object ImageFileName = row["ImageFileName"];
           if (ImageFileName != DBNull.Value && ImageFileName != null )
           {
               string value = ImageFileName.ToString().Split(',')[0];
               string url = @"D:\NewOutlookFiles" + txtProjectId.Text + "/" + value;
               string titleText = "Deviation" + value + "Picture";
               string link = "javascript: void openPicture('_" + value + "', '" + titleText + "', '" + url + "')";
               ret = "<a href=\x22" + link + "\x22>" + ret + "</a>";
           }

Quote：

我的ImageFileName列具有由逗号分隔的多个值，并将值绑定到label。它工作正常，但问题是我想只将第一个值绑定到标签而不是将所有值绑定到

My "ImageFileName" column has multiple values separated by comma , and binding values to label. it's working fine but problem is i want to bind only first value to the label not all the values from column

拆分并选择第一个。

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