从datgridview和数据库访问中删除行 [英] Delete rows from datgridview and database access

问题描述

嗨 我正在使用c#开发一个桌面应用程序.我想知道如何使用databse Ms-Access和Datagridview中的复选框删除datagridview中的多行.
在Advance中致谢

Hi I am developing a desktop application using c#.I want to know how i can delete multiple rows in datagridview using checkbox from databse Ms-Access and Datagridview.

Thanks in Advance

推荐答案

尝试以下操作:

这就是获取datasource:
的方法

Try this:

This is how you can get datasource:

<asp:SqlDataSource ID="SqlDataSource1" Runat="server"

    SelectCommand="SELECT EmployeeID, LastName, City FROM Employees"

    DeleteCommand="DELETE FROM Employees WHERE [EmployeeID] = @EmployeeID"

    ConnectionString="<%

ConnectionStrings:NorthwindConnectionString ％> " > < DeleteParameters > < asp:Parameter 名称 =" / < /DeleteParameters > < /asp:SqlDataSource >

ConnectionStrings:NorthwindConnectionString %>" > <DeleteParameters> <asp:Parameter Name="EmployeeID" /> </DeleteParameters> </asp:SqlDataSource>

这是Grid中CheckBox 的模板字段:

This is template field for CheckBox in Grid:

<asp:TemplateField>
    <ItemTemplate>
        <asp:CheckBox ID="chkRows" runat="server"/>
    </ItemTemplate>
</asp:TemplateField>

这将在Grid中添加checkBox :

This will add checkBox in Grid:

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="EmployeeID" DataSourceID="SqlDataSource1">
    <Columns>
        <asp:TemplateField>
            <ItemTemplate>
                <asp:CheckBox ID="cbRows" runat="server"/>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:BoundField DataField="EmployeeID" HeaderText="EmployeeID" InsertVisible="False" ReadOnly="True" SortExpression="EmployeeID" />
        <asp:BoundField DataField="LastName" HeaderText="LastName" SortExpression="LastName" />
        <asp:BoundField DataField="City" HeaderText="City" SortExpression="City" />
    </Columns>
</asp:GridView>

<asp:SqlDataSource ID="SqlDataSource1" Runat="server"

    SelectCommand="SELECT EmployeeID, LastName, City FROM Employees"

    DeleteCommand="DELETE FROM Employees WHERE [EmployeeID] = @EmployeeID"

    ConnectionString="<%

ConnectionStrings:NorthwindConnectionString ％> " > < DeleteParameters > < asp:Parameter 名称 =" / < /DeleteParameters > < /asp:SqlDataSource > < asp:Button ID =" =" btnMultipleRowDelete_Click" runat =" 文本 删除行" / >

ConnectionStrings:NorthwindConnectionString %>" > <DeleteParameters> <asp:Parameter Name="EmployeeID" /> </DeleteParameters> </asp:SqlDataSource> <asp:Button ID="btnMultipleRowDelete" OnClick="btnMultipleRowDelete_Click" runat="server" Text="Delete Rows" />

从Grid:
删除多条记录的代码

Code for deletion of multiple records from Grid:

protected void btnMultipleRowDelete_Click(object sender, EventArgs e)
{
    // Looping through all the rows in the GridView
    foreach (GridViewRow row in GridView1.Rows)
    {
        CheckBox checkbox = (CheckBox)row.FindControl("cbRows");

        //Check if the checkbox is checked.
        //value in the HtmlInputCheckBox's Value property is set as the

        //value of the delete command's parameter.
        if (checkbox.Checked)
        {
            // Retreive the Employee ID
            int employeeID = Convert.ToInt32(GridView1.DataKeys[row.RowIndex].Value);

            // Pass the value of the selected Employye ID to the Delete //command.
            SqlDataSource1.DeleteParameters["EmployeeID"].DefaultValue = employeeID.ToString();
            SqlDataSource1.Delete();
        }
    }
}

希望对您有所帮助.

另请参阅一些相关链接:
删除多行记录Gridview复选框确认 [通过分页在DataGridView中添加，编辑和删除 [ ^ ]

类似的讨论:
删除DataGridView中所有选定的行 [ ^ ]
如何删除DataGridView中的多行 [ ^ ]
删除datagridview中的多行 [删除datagridview和访问表中的多行 [ ^ ]

Hope it helps.

Also refer some related links:
Delete Multiple Rows Records Gridview CheckBox Confirmation[^]
Add, Edit, and Delete in DataGridView with Paging[^]

Similar discussion:
delete all selected rows in DataGridView [^]
How to delete multiple rows in a DataGridView[^]
delete multiple rows in datagridview[^]

This one exact matching your requirement:
delete multiple rows in datagridview and access table[^]

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