datagrid Դ?源码?
string a = this.GridView2.DataKeys[e.RowIndex][0].ToString();
string str = ((TextBox)this.GridView2.Rows[e.RowIndex].Cells[0].Controls[0]).Text;
string ds = ((TextBox)this.GridView2.Rows[e.RowIndex].Cells[1].Controls[0]).Text;
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=Test;Integrated Security=True");
con.Open();
SqlCommand cmd=new SqlCommand("update T1 set T_title='"+str+"' ,T_date='"+ds+"' where T_id='"+a+"'",con);
if (Convert.ToInt(cmd.ExecuteNonQuery()) > 0)
{
Response.Write("更新成功");
}
else
Response.Write("更新失败");
bind();
}
vb.net如何实现打印DataGridView1里的内容，求源码
使用 PrintDocument 控件的源码qlibrary 源码 Print() 方法可以打印指定对象中的内容，参考代码如下：Private Sub Button1_Click(ByVal sender As System.Object,源码whatsns源码 ByVal e As System.EventArgs) Handles Button1.ClickPrintDocument1.Print()
End Sub
Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
Dim bm As New Bitmap(Me.DataGridView1.Width, Me.DataGridView1.Height)
DataGridView1.DrawToBitmap(bm, New Rectangle(0, 0, Me.DataGridView1.Width, Me.DataGridView1.Height))
e.Graphics.DrawImage(bm, 0, 0)
End Sub
C#用datagriview控件增加删除行数据，并且更新到xml中，源码求代码（急）如图
完全按你的源码要求写的，供参考：前提是源码XML文件已创建好，在窗体里选择该XML文件，源码再行操作：
窗体：
//选择XML按钮private void btnXML_Click(object sender,源码 EventArgs e)
{
DataTable dt = new DataTable();
OpenFileDialog xmlFile = new OpenFileDialog();
xmlFile.Filter = "*.xml|";
xmlFile.Title = "请选择xml文件";
if (xmlFile.ShowDialog() == DialogResult.OK)
{
this.txtPath.Text = xmlFile.FileName;//在textBox1控件中显示选择的路径
dt=GetXML(this.txtPath.Text);
}
if(!dt.Equals(null)&&dt.Rows.Count>0)
LoadData(dt, dgvXML);//加载到窗体中
}
//保存按钮
private void button1_Click(object sender, EventArgs e)
{
int n = SaveDgv();
if (n > 0)
{
MessageBox.Show("保存成功！");
DataTable dt = new DataTable();
dt = GetXML(this.txtPath.Text);
LoadData(dt,源码 dgvXML);//刷新加载
}
else
{
MessageBox.Show("保存失败！");
DataTable dt = new DataTable();
dt = GetXML(this.txtPath.Text);
LoadData(dt,源码aspack源码 dgvXML);//刷新加载
}
}
//删除按钮
private void btnDelete_Click(object sender, EventArgs e)
{
int n = 0;//判断是否删除
for (int i = 0; i < dgvXML.SelectedRows.Count; i++)
{
string id = dgvXML.SelectedRows[i].Cells[0].Value.ToString();
XmlDocument doc = new XmlDocument();
doc.Load(this.txtPath.Text);
XmlNodeList nod = doc.DocumentElement.ChildNodes;
XmlNode root = doc.DocumentElement;
foreach (XmlNode peo in nod)
{
if (XmlNode.Equals(peo.SelectSingleNode("ID").InnerText, id))
{
root.RemoveChild(peo);//从根节点删除该ID的PERSON
doc.Save(this.txtPath.Text);
n++;
}
}
}
if (n > 0)
{
DataTable dt = new DataTable();
dt = GetXML(this.txtPath.Text);
LoadData(dt, dgvXML);//刷新加载
MessageBox.Show("删除成功！");
}
else
{
MessageBox.Show("删除失败！源码");
}
}
// DataGridView中加载数据
private void LoadData(DataTable dt,源码金色源码 DataGridView dgv)
{
dgv.Rows.Clear();//datagridview清空数据
if (dt != null && dt.Rows.Count > 0)
{
dgv.Rows.Add(dt.Rows.Count);
for (int i = 0; i < dt.Rows.Count; i++)
{
for (int k = 0; k < dt.Columns.Count; k++)
{
dgv.Rows[i].Cells[k].Value = dt.Rows[i][k].ToString();//赋值
}
}
}
}
//datagridview添加行号
private void dataGridView1_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
{
e.Row.HeaderCell.Value = (e.Row.Index + 1).ToString();
}
//解析XML生成DATATABLE
private List<string> IDList = new List<string>();//用来记录已有的ID，以在修改时判断是否新增
private DataTable GetXML(string path)
{
DataTable dt = new DataTable();
dt.Columns.Add("ID");
dt.Columns.Add("NAME");
dt.Columns.Add("SEX");
dt.Columns.Add("PHONE");
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNodeList nod = doc.DocumentElement.ChildNodes;
foreach (XmlNode peo in nod)
{
XmlNodeList pe = peo.ChildNodes;
DataRow row = dt.NewRow();
foreach (XmlNode p in pe)
{
if (p.Name == "ID")
{
row["ID"] = p.InnerText.ToString();
IDList.Add(p.InnerText.ToString());//添加ID记录，以在修改时判断是否新增
}
if (p.Name == "NAME")
{
row["NAME"] = p.InnerText.ToString();
}
if (p.Name == "SEX")
{
row["SEX"] = p.InnerText.ToString();
}
if (p.Name == "PHONE")
{
row["PHONE"] = p.InnerText.ToString();
}
}
dt.Rows.Add(row);
}
return dt;
}
//修改dgv数据后保存到XML文件
private int SaveDgv()
{
int n = 0;
for (int i = 0; i < dgvXML.Rows.Count-1; i++)
{
XmlDocument doc = new XmlDocument();
doc.Load(this.txtPath.Text);
XmlNodeList nod = doc.DocumentElement.ChildNodes;
string id = dgvXML.Rows[i].Cells[0].Value.ToString();
if (IDList.Contains(id)) //如果是已有的ID，则修改
{
foreach (XmlNode peo in nod)
{
if (XmlNode.Equals(peo.SelectSingleNode("ID").InnerText, id))
{
peo.SelectSingleNode("NAME").InnerText = dgvXML.Rows[i].Cells[1].Value.ToString();//赋值姓名
peo.SelectSingleNode("SEX").InnerText = dgvXML.Rows[i].Cells[2].Value.ToString();//赋值性别
peo.SelectSingleNode("PHONE").InnerText = dgvXML.Rows[i].Cells[3].Value.ToString();//赋值电话
doc.Save(this.txtPath.Text);
n++;
break;//当找到该ID记录并修改后，跳出循环
}
}
}
else //否则为新增
{
XmlNode root = doc.DocumentElement;
XmlElement PERSON = doc.CreateElement("PERSON");
XmlElement ID = doc.CreateElement("ID");
ID.InnerText = id;//赋值id
XmlElement NAME = doc.CreateElement("NAME");
NAME.InnerText = dgvXML.Rows[i].Cells[1].Value.ToString();//赋值姓名
XmlElement SEX = doc.CreateElement("SEX");
SEX.InnerText = dgvXML.Rows[i].Cells[2].Value.ToString();//赋值性别
XmlElement PHONE = doc.CreateElement("PHONE");
PHONE.InnerText = dgvXML.Rows[i].Cells[3].Value.ToString();//赋值电话
PERSON.AppendChild(ID);
PERSON.AppendChild(NAME);
PERSON.AppendChild(SEX);
PERSON.AppendChild(PHONE);
root.AppendChild(PERSON);
doc.Save(this.txtPath.Text);//保存
n++;
}
}
return n;
}
XML文件：
<?xml version="1.0" standalone="yes"?>
<List>
<PERSON>
<ID></ID>
<NAME>测一</NAME>
<SEX>男男</SEX>
<PHONE></PHONE>
</PERSON>
<PERSON>
<ID></ID>
<NAME>再二</NAME>
<SEX>女女</SEX>
<PHONE></PHONE>
</PERSON>
<PERSON>
<ID></ID>
<NAME>张三</NAME>
<SEX>男男</SEX>
<PHONE></PHONE>
</PERSON>
<PERSON>
<ID></ID>
<NAME>王五</NAME>
<SEX>女女</SEX>
<PHONE></PHONE>
</PERSON>
</List>
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