设置Gridview的CommandArgument [英] Setting CommandArgument for a Gridview

问题描述

我想为Gridview设置CommandArgument，但是如果运行程序，则会发生错误.

I want to set a CommandArgument for a Gridview but if I run the programm an error occured.

这是我的ButtonField声明:

Here is my ButtonField declaration:

<asp:ButtonField Text="Löschen" CommandName="Deleterecord"  ButtonType="Button" CommandArgument=<% Eval("userId") %>  /> 

这是错误:

Parser Error Message: Literal content ('<asp:ButtonField Text="Löschen" CommandName="Deleterecord"  ButtonType="Button" CommandArgument=') is not allowed within a 'System.Web.UI.WebControls.DataControlFieldCollection'.

使用这些代码块填充Gridview:

with these block of code I fill my Gridview:

protected void Button2_Click(object sender, EventArgs e)
        {
            Guid g = Guid.Parse("ef7a9f97-6a9a-44c6-ac38-82a5d06c394e");
            RoutesManager rm = new RoutesManager(g);
            rm.GetAllRoutes();
            List<Route> result;
            result=rm.GetAllRoutes();

            GridView1.DataSource = result;
            GridView1.DataBind();

        }

这是GetallRoutes:

and this is GetallRoutes:

 public List<Route> GetAllRoutes()
        {
            var inputParams = new Dictionary<string, object>();
            var xmlHelper = new XmlHelper();
            var result = new List<Route>();

            inputParams.Add("UserId", _userId);

            DataTable dt = _dbhelper.Select("SELECT * FROM ROUTES WHERE UserId=@UserId", inputParams);

            foreach (DataRow row in dt.Rows)
            {
                var xmlDoc = new XmlDocument();
                xmlDoc.LoadXml(row[XmldocPosition].ToString());               
                result.Add(xmlHelper.ConvertXmlDocumentToRoute(xmlDoc.ToXDocument()));
            }

             return result;

}

我的网格视图中充满了这段代码，我在Gridview中为每行放置一个链接按钮，我希望如果用户单击此按钮，仅从DB和Gridview中删除该行

My grid view full with this block of code ,I put a link button in my Gridview for each Row and I want if the user click this button only this row is deleted from DB and Gridview

推荐答案

您丢失了

• 右括号
• userID
上的双引号

• 单引号包含CommandArgument的结果值

• A closing bracket
• Double quotes on the userID

• Single quote to contain the resulting value of CommandArgument

< asp:ButtonField Text =Löschen" CommandName ="Deleterecord" ButtonType ="Button" CommandArgument ='<％#Eval("userId")％>'/>

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