Question

我在gridview中有一些数据如下。

我想合并gridview中的行，如下所示。

我已经尝试使用RowDataBound（）和PreRender（）中的以下代码，结果与我想要的结果不一样。

for (int rowIndex = GridView1.Rows.Count - 2; rowIndex >= 0; rowIndex--)
{
    GridViewRow gvRow = GridView1.Rows[rowIndex];
    GridViewRow gvPreviousRow = GridView1.Rows[rowIndex + 1];
    for (int cellCount = 0; cellCount < gvRow.Cells.Count; cellCount++)
    {
        if (gvRow.Cells[cellCount].Text ==
                            gvPreviousRow.Cells[cellCount].Text)
        {
            if (gvPreviousRow.Cells[cellCount].RowSpan < 2)
            {
                gvRow.Cells[cellCount].RowSpan = 2;
            }
            else
            {
                gvRow.Cells[cellCount].RowSpan =
                    gvPreviousRow.Cells[cellCount].RowSpan + 1;
            }
            gvPreviousRow.Cells[cellCount].Visible = false;
        }
    }
}

在aspx中，

<asp:GridView ID="GridView1" runat="server" Width="100%"
    AutoGenerateColumns = "false" AlternatingRowStyle-BackColor = "#fffccc" HeaderStyle-ForeColor ="#ffffff" 
    HeaderStyle-BackColor = "#333" AllowPaging ="true" OnRowDataBound="GridView1_RowDataBound" PageSize = "20"
    OnPageIndexChanging="GridView1_PageIndexChanging" OnPreRender="GridView1_PreRender">
    <HeaderStyle Height="30px" />
        <Columns>
            <asp:TemplateField HeaderText="Client Company">
                <ItemTemplate>
                    <asp:Label ID="lblClientCompany" runat="server" Text='<%# Eval("ClientCompany")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Position">
                <ItemTemplate>
                    <asp:Label ID="lblPosition" runat="server" Text='<%# Eval("Position")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Candidate">
                <ItemTemplate>
                    <asp:Label ID="lblCandidate" runat="server" Text='<%# Eval("Candidate")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Status">
                <ItemTemplate>
                    asp:Label ID="lblStatus" runat="server" Text='<%# Eval("Status")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    <AlternatingRowStyle BackColor="#fffccc"  />
</asp:GridView>

请帮助我，因为我不知道。感谢。

Answer 1

您需要尝试DataBound而不是RowDataBound

中的方法 GridView控件绑定到数据源后（在绑定所有行之后），

DataBound触发。

当数据行绑定到GridView控件中的数据时，

RowDataBound将触发每一行。

<强> ASPX

<asp:GridView ID="GridView1" runat="server" Width="100%"
    AutoGenerateColumns = "false" AlternatingRowStyle-BackColor = "#fffccc" HeaderStyle-ForeColor ="#ffffff" 
    HeaderStyle-BackColor = "#333" AllowPaging ="true"  OnDataBound="GridView1_DataBound1" PageSize = "20"
    OnPageIndexChanging="GridView1_PageIndexChanging">
    <HeaderStyle Height="30px" />
        <Columns>
            <asp:TemplateField HeaderText="Client Company">
                <ItemTemplate>
                    <asp:Label ID="lblClientCompany" runat="server" Text='<%# Eval("ClientCompany")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Position">
                <ItemTemplate>
                    <asp:Label ID="lblPosition" runat="server" Text='<%# Eval("Position")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Candidate">
                <ItemTemplate>
                    <asp:Label ID="lblCandidate" runat="server" Text='<%# Eval("Candidate")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Status">
                <ItemTemplate>
                    asp:Label ID="lblStatus" runat="server" Text='<%# Eval("Status")%>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    <AlternatingRowStyle BackColor="#fffccc"  />
</asp:GridView>

代码背后

protected void GridView1_DataBound1(object sender, System.EventArgs e)
{
    for (int rowIndex = GridView1.Rows.Count - 2; rowIndex >= 0; rowIndex--)
    {
        GridViewRow gvRow = GridView1.Rows[rowIndex];
        GridViewRow gvPreviousRow = GridView1.Rows[rowIndex + 1];
        for (int cellCount = 0; cellCount < gvRow.Cells.Count; cellCount++)
        {
            if (gvRow.Cells[cellCount].Text ==
                                gvPreviousRow.Cells[cellCount].Text)
            {
                if (gvPreviousRow.Cells[cellCount].RowSpan < 2)
                {
                    gvRow.Cells[cellCount].RowSpan = 2;
                }
                else
                {
                    gvRow.Cells[cellCount].RowSpan =
                        gvPreviousRow.Cells[cellCount].RowSpan + 1;
                }
                gvPreviousRow.Cells[cellCount].Visible = false;
            }
        }
    }
}

Answer 2

正如Vignesh Kumar所建议的那样，在填充了所有行之后，可以在DataBound事件中完成处理。

为了检索字段值，我建议将它们添加到GridView的DataKeyNames属性中：

<asp:GridView ID="GridView1" runat="server" DataKeyNames="ClientCompany,Position" OnDataBound="GridView1_DataBound" ... />

以下是组合单元格的代码：

protected void GridView1_DataBound(object sender, EventArgs e)
{
    for (int currentRowIndex = 0; currentRowIndex < GridView1.Rows.Count; currentRowIndex++)
    {
        GridViewRow currentRow = GridView1.Rows[currentRowIndex];
        CombineColumnCells(currentRow, 0, "ClientCompany");
        CombineColumnCells(currentRow, 1, "Position");
    }
}

private void CombineColumnCells(GridViewRow currentRow, int colIndex, string fieldName)
{
    TableCell currentCell = currentRow.Cells[colIndex];

    if (currentCell.Visible)
    {
        Object currentValue = GridView1.DataKeys[currentRow.RowIndex].Values[fieldName];

        for (int nextRowIndex = currentRow.RowIndex + 1; nextRowIndex < GridView1.Rows.Count; nextRowIndex++)
        {
            Object nextValue = GridView1.DataKeys[nextRowIndex].Values[fieldName];

            if (nextValue.ToString() == currentValue.ToString())
            {
                GridViewRow nextRow = GridView1.Rows[nextRowIndex];
                TableCell nextCell = nextRow.Cells[colIndex];
                currentCell.RowSpan = Math.Max(1, currentCell.RowSpan) + 1;
                nextCell.Visible = false;
            }
            else
            {
                break;
            }
        }
    }
}

Answer 3

我已经在vb.net代码的第一列后面创建了

注意：列应为BoundField。

<asp:BoundField DataField="ProductID" HeaderText="ProductID">
      <ItemStyle Width="70px" HorizontalAlign="Center" />
</asp:BoundField>

后面的VB.Net代码：

Private Sub gvGridView_DataBound(sender As Object, e As EventArgs) Handles gvGridView.DataBound

    Dim rowCount As Integer = gvTranscript1.Rows.Count
    Dim RowIndex As Integer = 0
    Dim gvRow As GridViewRow
    Dim gvPrevRow As GridViewRow
    Dim cellIndex As Integer = 0

    For RowIndex = rowCount - 2 To 0 Step -1
        gvRow = gvTranscript1.Rows(RowIndex) 'second last
        gvPrevRow = gvTranscript1.Rows(RowIndex + 1) 'last
        'lblmsg.Text += gvRow.Cells(0).Text & " - " & gvPrevRow.Cells(0).Text & "<br>"
        If gvRow.Cells(0).Text = gvPrevRow.Cells(0).Text Then
            If gvPrevRow.Cells(cellIndex).RowSpan < 2 Then

                gvRow.Cells(cellIndex).RowSpan = 2

            Else

                gvRow.Cells(cellIndex).RowSpan = gvPrevRow.Cells(cellIndex).RowSpan + 1

            End If
            gvPrevRow.Cells(0).Visible = False
        End If
    Next

End Sub

Answer 4

Dim rows = GridView1.Rows.Cast(Of GridViewRow).Union(GridView2.Rows.Cast(Of GridViewRow)).ToArray().Select(Function(f) New With {.YourColumn1 = f.Cells(0).Text, .YourColumn2 = f.Cells(1).Text, .YourColumnN = f.Cells(n).Text})
GridView1.DataSource = rows
GridView1.DataBind()

Answer 5

移除ItemTemplate并取boundField Columns

如何合并gridview中的行

5 个答案: