Question

如何在选中复选框时获取gridview行值。我在按钮的点击事件中使用此代码，但它无效。

Html代码：

        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="100%"
        DataKeyNames="ReportId" OnRowDataBound="GridView2_OnRowDataBound" ForeColor="#333333"
        PageSize="5" Style="text-align: center">
        <Columns>
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:CheckBox ID="CheckBoxG1" runat="server" />
                </ItemTemplate>

C＃代码：

    protected void Button1_Click(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        if (row.RowType == DataControlRowType.DataRow)
        {
            CheckBox CheckRow = (row.Cells[0].FindControl("CheckBoxG1") as CheckBox);
            if (CheckRow.Checked)
            {

            }
        }
    }
}

Answer 1

我无法看到您如何绑定数据以及您的按钮位置在哪里。所以这是工作样本。

<asp:Button Text="text" runat="server" OnClick="Unnamed_Click" />
        <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="ReportId" Width="100%"
            ForeColor="#333333" PageSize="5" Style="text-align: center">
            <Columns>
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBoxG1" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            GridView1.DataSource = new RowModel[]
            {
                new RowModel { ReportId = "1" },
                new RowModel { ReportId = "2" },
                new RowModel { ReportId = "3" }
            };

            GridView1.DataBind();
        }
    }

    protected void Unnamed_Click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridView1.Rows)
        {
            if (row.RowType == DataControlRowType.DataRow)
            {
                CheckBox CheckRow = (row.Cells[0].FindControl("CheckBoxG1") as CheckBox);
                if (CheckRow.Checked)
                {

                }
            }
        }
    }

public class RowModel
{
    public string ReportId { get; set; }
}

Answer 2

在我的示例代码中，我在绑定gridview时考虑手动数据，因为您没有指定如何通过数据库绑定gridview，但它应该适用于这两种方法。我的HTML代码

＆＃13;

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Get Checkbox Selected Row Values from Gridview in Asp.net</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="gvDetails" DataKeyNames="UserId" AutoGenerateColumns="false" CellPadding="5" runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField HeaderText="UserId" DataField="UserId" />
<asp:BoundField HeaderText="UserName" DataField="UserName" />
<asp:BoundField HeaderText="Education" DataField="Education" />
<asp:BoundField HeaderText="Location" DataField="Location" />
</Columns>
<HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
</asp:GridView>
<asp:Button ID="btnProcess" Text="Get Selected Records" runat="server"
Font-Bold="true" onclick="btnProcess_Click" /><br />
<asp:Label ID="lblmsg" runat="server" />
</div>
</form>
</body>
  </html>

＆＃13;

背后的代码：这只是用于为GridView提供适当的数据

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindGridviewData();
        }
    }
    protected void BindGridviewData()
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("UserId", typeof(Int32));
        dt.Columns.Add("UserName", typeof(string));
        dt.Columns.Add("Education", typeof(string));
        dt.Columns.Add("Location", typeof(string));
        DataRow dtrow = dt.NewRow();    // Create New Row
        dtrow["UserId"] = 1;            //Bind Data to Columns
        dtrow["UserName"] = "SureshDasari";
        dtrow["Education"] = "B.Tech";
        dtrow["Location"] = "Chennai";
        dt.Rows.Add(dtrow);
        dtrow = dt.NewRow();               // Create New Row
        dtrow["UserId"] = 2;               //Bind Data to Columns
        dtrow["UserName"] = "MadhavSai";
        dtrow["Education"] = "MBA";
        dtrow["Location"] = "Nagpur";
        dt.Rows.Add(dtrow);
        dtrow = dt.NewRow();              // Create New Row
        dtrow["UserId"] = 3;              //Bind Data to Columns
        dtrow["UserName"] = "MaheshDasari";
        dtrow["Education"] = "B.Tech";
        dtrow["Location"] = "Nuzividu";
        dt.Rows.Add(dtrow);
        gvDetails.DataSource = dt;
        gvDetails.DataBind();
    }

Button_Click事件代码

protected void btnProcess_Click(object sender, EventArgs e)
    {
        string str = string.Empty;
        string strname = string.Empty;
        string edu = string.Empty;
        string location = string.Empty;
        foreach (GridViewRow gvrow in gvDetails.Rows)
        {
            CheckBox chk = (CheckBox)gvrow.FindControl("chkSelect");
            if (chk != null & chk.Checked)
            {
               //To Fetch the row index
                //str += gvDetails.SelectedIndex.ToString();

                //To Fetch the value of Selected Row.
                str += gvDetails.DataKeys[gvrow.RowIndex].Value.ToString() + ',';
                strname += gvrow.Cells[2].Text + ',';
                edu += gvrow.Cells[3].Text + ',';
                location += gvrow.Cells[4].Text + ',';
            }
        }
        str = str.Trim(",".ToCharArray());
        strname = strname.Trim(",".ToCharArray());
        lblmsg.Text = "Selected UserIds: <b>" + str + "</b><br/>" + "Selected UserNames: <b>" + strname + "</b><br>" + " Education: <b>" + edu + "</b><br>" + " Location: <b>" + location + "</b><br>";

    }
}

带CheckBox的GridView：如何在ASP.Net中获取选定的行

2 个答案: