当按钮单击行时在 C# Gridview 中获取单元格值答案

【问题标题】：Get Cell Value in C# Gridview when Button clicked on row当按钮单击行时在 C# Gridview 中获取单元格值
【发布时间】：2013-06-28 13:45:03
【问题描述】：

我有一个gridviewMain。每当我单击第 1 行的关闭链接按钮时，我都想获得值 aa。单击第 2 行上的关闭获取 bb 的值。任何想法。

A    B   C  
aa  xx   3  CLOSE 
bb  yy   4  CLOSE
cc  zz   5  CLOSE

aspx

 <asp:BoundField DataField="afield" HeaderText="A" 
     SortExpression="afield" >
    <ItemStyle HorizontalAlign="Center" />
 </asp:BoundField>
 <asp:BoundField DataField="bfield" HeaderText="B" SortExpression="cfield" >
     <ItemStyle HorizontalAlign="Center" />
  </asp:BoundField>
  <asp:BoundField DataField="cfield" HeaderText="C" SortExpression="cfield" >
     <ItemStyle HorizontalAlign="Center" />
   </asp:BoundField>
 <asp:TemplateField ShowHeader="False">

       <ItemTemplate>
          <asp:LinkButton ID="lbClose" runat="server" CausesValidation="False"  CommandName="CloseClicked" Text="Close"></asp:LinkButton>

        </ItemTemplate>

                    </asp:TemplateField>

【问题讨论】：

标签： c# asp.net gridview

【解决方案1】：

假设您在前三列中使用BoundFields，并且您希望处理LinkButton-click 事件（而不是GridView 中的RowCommand）：

protected void CloseLinkClicked(Object sender, EventArgs e)
{
    var closeLink = (Control) sender;
    GridViewRow row = (GridViewRow) closeLink.NamingContainer;
    string firstCellText = row.Cells[0].Text; // here we are
}

如果您使用 TemplateFields 并且值 aa 在标签中（例如 LblValue）：

Label lblValue = (Label) row.FindControl("LblValue"); // lblValue.Text = "aa"

【讨论】：

@Apollo：你不需要处理RowCommand，只需处理LinkButton的Click-event：<asp:LinkButton ID="lbClose" runat="server" CausesValidation="False" OnClick="CloseLinkClicked" Text="Close"></asp:LinkButton>

【解决方案2】：

为此使用数据键。简单得多：

<asp:GridView ID="GridView1" runat="server" DataKeyNames="SomeValue, AnotherValue" ... >

然后在代码隐藏中，只需获取与行关联的键：

var rowIndex = 0;
var someValue = GridView1.DataKeys[rowIndex]["SomeValue"] as string;

【讨论】：

【解决方案3】：

您需要在GridView 标记中将CommandName 分配给您的LinkButton 列。从那里您还需要连接OnRowCommand 事件来处理您的Close 命令。

下面是在GridView 上使用Add 命令的示例：

Markup:
<asp:gridview id="ContactsGridView" datasourceid="ContactsSource" allowpaging="true" 
    autogeneratecolumns="false" onrowcommand="ContactsGridView_RowCommand" runat="server">
    <columns>
       <asp:buttonfield buttontype="Link" commandname="Add" text="Add"/>
       <asp:boundfield datafield="ContactID" headertext="Contact ID"/>
       <asp:boundfield datafield="FirstName" headertext="First Name"/> 
       <asp:boundfield datafield="LastName" headertext="Last Name"/>
    </columns>
</asp:gridview>

Code-Behind:
void ContactsGridView_RowCommand(Object sender, GridViewCommandEventArgs e)
{
    // If multiple buttons are used in a GridView control, use the
    // CommandName property to determine which button was clicked.
    if(e.CommandName=="Add")
    {
        // Convert the row index stored in the CommandArgument
        // property to an Integer.
        int index = Convert.ToInt32(e.CommandArgument);

        // Retrieve the row that contains the button clicked 
        // by the user from the Rows collection.
        GridViewRow row = ContactsGridView.Rows[index];

        // Create a new ListItem object for the contact in the row.     
        ListItem item = new ListItem();
        item.Text = Server.HtmlDecode(row.Cells[2].Text) + " " +
        Server.HtmlDecode(row.Cells[3].Text);

        // If the contact is not already in the ListBox, add the ListItem 
        // object to the Items collection of the ListBox control. 
        if (!ContactsListBox.Items.Contains(item))
        {
            ContactsListBox.Items.Add(item);
        }
    }
}

【讨论】：

【解决方案4】：

你可以这样

<asp:GridView ID="grid" runat="server" 
AutoGenerateColumns="false" onrowcommand="grid_RowCommand" >
<Columns>
<asp:TemplateField >
<ItemTemplate>
<asp:TextBox ID="txt" runat="server" Text='<%#Eval("xxx")%>'></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnk" CommandArgument=<%# Container.DataItemIndex + 1 %> 
CommandName="arg">Click</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

代码

 protected void grid_RowCommand(object sender, GridViewCommandEventArgs e)
{
int rowindex = int.Parse(e.CommandArgument.ToString());
((TextBox)(grid.Rows[rowindex].FindControl("txtgvunit"))).Text
}

参考 http://dotnetinbox.blogspot.in/2014/02/get-gridview-row-data-in-c.html

【讨论】：