C# 如何从GridView中删除一行并将其余值设置为控件?
嗯, 这就是我现在拥有的。。。但是我想添加一个删除功能。我添加了一个delete命令按钮列,在它的click事件中,我删除了特定的行。 但我的问题是,我无法在控件中保留其余行的值C# 如何从GridView中删除一行并将其余值设置为控件?,c#,asp.net,gridview,C#,Asp.net,Gridview,嗯, 这就是我现在拥有的。。。但是我想添加一个删除功能。我添加了一个delete命令按钮列,在它的click事件中,我删除了特定的行。 但我的问题是,我无法在控件中保留其余行的值 protected void Gridview1_RowDeleting(object sender, GridViewDeleteEventArgs e) { DataTable dtCurrentTable=new DataTable(); int RowIndex = e.
protected void Gridview1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
DataTable dtCurrentTable=new DataTable();
int RowIndex = e.RowIndex;
dtCurrentTable = (DataTable)ViewState["CurrentTable"];
dtCurrentTable.Rows.RemoveAt(e.RowIndex);
SetPreviousData1(dtCurrentTable);
}
private void SetPreviousData1(DataTable dtCurrentTable)
{
int rowIndex = 0;
if (dtCurrentTable != null)
{
DataTable dt = dtCurrentTable;
if (dt.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("TextBox1");
TextBox box2 = (TextBox)Gridview1.Rows[rowIndex].Cells[2].FindControl("TextBox2");
TextBox box3 = (TextBox)Gridview1.Rows[rowIndex].Cells[3].FindControl("TextBox3");
box1.Text = dt.Rows[i]["Column1"].ToString();
box2.Text = dt.Rows[i]["Column2"].ToString();
box3.Text = dt.Rows[i]["Column3"].ToString();
rowIndex++;
}
}
}
}
受保护的无效Gridview1\u行删除(对象发送方,GridViewDeleteEventArgs e)
{
DataTable dtCurrentTable=新DataTable();
int RowIndex=e.RowIndex;
dtCurrentTable=(DataTable)视图状态[“CurrentTable”];
dtCurrentTable.Rows.RemoveAt(e.RowIndex);
SetPreviousData1(dtCurrentTable);
}
私有void SetPreviousData1(数据表dtCurrentTable)
{
int rowIndex=0;
如果(dtCurrentTable!=null)
{
DataTable dt=dtCurrentTable;
如果(dt.Rows.Count>0)
{
对于(int i=0;i
请注意,我并没有从数据库中获取任何内容
更新(我代码的其余部分)
private void SetInitialRow()
{
DataTable dt=新的DataTable();
数据行dr=null;
添加(新的数据列(“行数”,typeof(字符串));
Add(新的数据列(“Column1”,typeof(string));
Add(新的数据列(“Column2”,typeof(string));
Add(新的数据列(“Column3”,typeof(string));
dr=dt.NewRow();
dr[“行数”]=1;
dr[“Column1”]=string.Empty;
dr[“Column2”]=string.Empty;
dr[“Column3”]=string.Empty;
dt.Rows.Add(dr);
//将数据表存储在ViewState中
视图状态[“当前表”]=dt;
Gridview1.DataSource=dt;
Gridview1.DataBind();
}
私有void AddNewRowToGrid()
{
int rowIndex=0;
如果(ViewState[“CurrentTable”]!=null)
{
DataTable dtCurrentTable=(DataTable)视图状态[“CurrentTable”];
DataRow drCurrentRow=null;
如果(dtCurrentTable.Rows.Count>0)
{
对于(int i=1;i 0)
{
对于(int i=0;i
ASPX
<asp:gridview ID="Gridview1" runat="server" ShowFooter="True" AutoGenerateColumns="False" OnRowDeleting="Gridview1_RowDeleting">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2">
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
onclick="ButtonAdd_Click" />
</FooterTemplate>
</asp:TemplateField>
<asp:CommandField DeleteText="D" HeaderText="D" ShowDeleteButton="true" />
</Columns>
</asp:gridview>
删除行后,缺少将数据重新绑定到gridview的操作 在
SetPreviousData1
函数中,添加:
GridView1.DataSource=dtCurrentTable;
GridView1.DataBind();
将您的gridview更新为以下内容:
<asp:gridview ID="Gridview1" runat="server" ShowFooter="true" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
<asp:TemplateField HeaderText="Header 1">
<ItemTemplate>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2">
<ItemTemplate>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 3">
<ItemTemplate>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterStyle HorizontalAlign="Right" />
<FooterTemplate>
<asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
onclick="ButtonAdd_Click" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Header 2">
<ItemTemplate>
<asp:LinkButton runat="server" ID="lnkDel" OnCommand="DeleteRowHandler" Text="delete"></asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:gridview>
现在将以下代码添加到您的.cs页面
protected void DeleteRowHandler(object sender, CommandEventArgs e)
{
GridViewRow row = ((GridViewRow) ((LinkButton)sender).Parent.Parent);
DataTable dt = = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));
dt.Columns.Add(new DataColumn("Column1", typeof(string)));
dt.Columns.Add(new DataColumn("Column2", typeof(string)));
dt.Columns.Add(new DataColumn("Column3", typeof(string)));
for (int i = 0; i < Gridview1.Rows.Count; i++)
{
dr = dt.NewRow();
dr[1] = ((TextBox)Gridview1.Rows[i].Cells[1].FindControl("TextBox1")).Text;
dr[2] = ((TextBox)Gridview1.Rows[i].Cells[2].FindControl("TextBox1")).Text;
dr[3] = ((TextBox)Gridview1.Rows[i].Cells[3].FindControl("TextBox1")).Text;
dt.Rows.Add(dr);
}
dt.Rows.RemoveAt(row.RowIndex);
ViewState["CurrentTable"] = dt;
Gridview1.DataSource = dt;
Gridview1.DataBind();
}
受保护的void DeleteRowHandler(对象发送方,CommandEventArgs e)
{
GridViewRow行=((GridViewRow)((LinkButton)sender.Parent.Parent);
DataTable dt==新DataTable();
数据行dr=null;
添加(新的数据列(“行数”,typeof(字符串));
Add(新的数据列(“Column1”,typeof(string));
Add(新的数据列(“Column2”,typeof(string));
Add(新的数据列(“Column3”,typeof(string));
对于(int i=0;i
我试过了,我希望它能这么简单。但它不起作用。。
protected void DeleteRowHandler(object sender, CommandEventArgs e)
{
GridViewRow row = ((GridViewRow) ((LinkButton)sender).Parent.Parent);
DataTable dt = = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));
dt.Columns.Add(new DataColumn("Column1", typeof(string)));
dt.Columns.Add(new DataColumn("Column2", typeof(string)));
dt.Columns.Add(new DataColumn("Column3", typeof(string)));
for (int i = 0; i < Gridview1.Rows.Count; i++)
{
dr = dt.NewRow();
dr[1] = ((TextBox)Gridview1.Rows[i].Cells[1].FindControl("TextBox1")).Text;
dr[2] = ((TextBox)Gridview1.Rows[i].Cells[2].FindControl("TextBox1")).Text;
dr[3] = ((TextBox)Gridview1.Rows[i].Cells[3].FindControl("TextBox1")).Text;
dt.Rows.Add(dr);
}
dt.Rows.RemoveAt(row.RowIndex);
ViewState["CurrentTable"] = dt;
Gridview1.DataSource = dt;
Gridview1.DataBind();
}