asp.net - 从 Gridview 检索绑定(bind)数据

Question

我有一个连接到显示数据的 SQL 数据源的 Gridview，我希望做的是通过按钮和 Eval 检索与选定行关联的数据。

有点像，

<asp:LinkButton runat=server OnClientClick="RetrieveInfo" Text="Send" />

但是我不能从代码中调用 Eval，我也不知道如何获取 DataKey。

我一直在网上搜索，但没有找到任何好的东西。谁能帮我？将不胜感激。

编辑:

<asp:GridView ID="GridView1" Width="100%" runat="server" AutoGenerateColumns="False"
DataKeyNames="ScheduleID" DataSourceID="SqlDataSource1">
    <Colums>
        <asp:TemplateField HeaderText="Date" SortExpression="Date">
           <ItemTemplate>
            <asp:Label ID="Label1" runat="server" Text='<%#Eval("Date")%>' />
          </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Time" SortExpression="starttime">
           <ItemTemplate>
            <asp:Label ID="Label1" runat="server" Text='<%#Eval("starttime")%>' />
          </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
           <ItemTemplate>
            <asp:LinkButton runat=server OnClientClick="RetrieveInfo" Text="Send" />
          </ItemTemplate>
        </asp:TemplateField>
    </Colums>
</asp:GridView>

它是略读的，但基本上就是这样。

Answer 1

愿这有帮助

编辑您的gridview html <Colums>至</Columns>

<asp:LinkButton runat=server OnClientClick="RetrieveInfo"   CommandName="Update"  Text="Send" />

Gridview Html

<asp:GridView ID="GridView1" Width="50%" runat="server" AutoGenerateColumns="False" 
            onrowcommand="GridView1_RowCommand" >
   <Columns>
        <asp:TemplateField HeaderText="Date" SortExpression="Date">
           <ItemTemplate>
            <asp:Label ID="lbldate" runat="server" Text='<%#Eval("Date")%>' />
          </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Time" SortExpression="starttime">
           <ItemTemplate>
            <asp:Label ID="lbltime" runat="server" Text='<%#Eval("starttime","{0:dd MMM yyyy}") %>' />
          </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField>
           <ItemTemplate>
            <asp:LinkButton runat="server" CommandName="sendvalue" CommandArgument="<%# ((GridViewRow) Container).RowIndex %>" OnClientClick="RetrieveInfo" Text="Send" />
          </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

隐藏代码:

     protected void Page_Load(object sender, EventArgs e)
       {
           bindGridview();
       }

   protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {

        if (e.CommandName == "sendvalue")
            {
                int getrow = Convert.ToInt32(e.CommandArgument);
                Label lbldate = (Label)GridView1.Rows[getrow].FindControl("lbldate");
                Label lbltime = (Label)GridView1.Rows[getrow].FindControl("lbltime");
                string getDate = lbldate.Text;
                string getStartTime = lbltime.Text;
               //here you retrieve all the value of select row and do your logic for link butn
                GridView1.EditIndex = -1;
                bindGridview();
            }
    }

    public void bindGridview()
    {
        SqlDataAdapter dap = new SqlDataAdapter("select Date,startTime from yourtable", con);
        DataSet ds = new DataSet();
        dap.Fill(ds);
        DataTable dt = ds.Tables[0];
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }