2 回答
TA贡献1942条经验 获得超3个赞
尝试这个
private void SetInitialRow()
{
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)));
dr = dt.NewRow();
dr["RowNumber"] = 1;
dr["Column1"] = string.Empty;
dr["Column2"] = string.Empty;
dr["Column3"] = string.Empty;
dt.Rows.Add(dr);
ViewState["CurrentTable"] = dt;
Gridview1.DataSource = dt;
Gridview1.DataBind();
}
private void AddNewRowToGrid()
{
try
{
int j = 8, rowIndex = 0;
DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
DataRow drCurrentRow = null;
if (dtCurrentTable.Rows.Count > 0)
{
for (int i = 1; i <= j; i++)
{
//extract the TextBox values
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");
drCurrentRow = dtCurrentTable.NewRow();
drCurrentRow["RowNumber"] = i + 1;
dtCurrentTable.Rows[i - 1]["Column1"] = box1.Text;
dtCurrentTable.Rows[i - 1]["Column2"] = box2.Text;
dtCurrentTable.Rows[i - 1]["Column3"] = box3.Text;
dtCurrentTable.Rows.Add(drCurrentRow);
}
// dtCurrentTable.Rows.Add(drCurrentRow);
ViewState["CurrentTable"] = dtCurrentTable;
Gridview1.DataSource = dtCurrentTable;
Gridview1.DataBind();
}
}
catch (Exception ex)
{
}
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
SetInitialRow();
}
}
protected void ButtonAdd_Click(object sender, EventArgs e)
{
AddNewRowToGrid();
}
TA贡献1797条经验 获得超6个赞
希望这能解决您的问题
页面加载
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
load();
}
}
加载()
protected void load()
{
if (ViewState["CurrentData"] == null)
{
DataTable dt = (DataTable)ViewState["CurrentData"];
BindGrid(1);
}
}
绑定网格()
private void BindGrid(int rowcount)
{
DataTable dt = new DataTable();
DataRow dr;
DataColumn RcAccCode, RcAccAccount, RcAmount, RcAccId;
int temp = 0;
int a = 0;
RcAccCode = new DataColumn("RcAccCode", Type.GetType("System.String"));
RcAccAccount = new DataColumn("RcAccAccount", Type.GetType("System.String"));
RcAmount = new DataColumn("RcAmount", Type.GetType("System.String"));
RcAccId = new DataColumn("RcAccId", Type.GetType("System.String"));
dt.Columns.Add(RcAccCode);
dt.Columns.Add(RcAccAccount);
dt.Columns.Add(RcAmount);
dt.Columns.Add(RcAccId);
TextBox TextBox1 = new TextBox();
TextBox TextBox2 = new TextBox();
TextBox TextBox3 = new TextBox();
if (ViewState["CurrentData"] != null)
{
dt = (DataTable)ViewState["CurrentData"];
if (dt.Rows.Count > 0)
{
dr = dt.NewRow();
dr[0] = dt.Rows[0][0].ToString();
}
for (int i = dt.Rows.Count - 1; i >= 0; i--)
{
DataRow dr1 = dt.Rows[i];
a = Convert.ToInt32(dr1["RcAccCode"].ToString());
break;
}
if (temp == 0)
{
dr = dt.NewRow();
dr[0] = a + 1;
dr[1] = TextBox1.Text;
dr[2] = TextBox2.Text;
dr[3] = TextBox3.Text;
dt.Rows.Add(dr);
}
}
else
{
dr = dt.NewRow();
dr[0] =1;
dr[1] = TextBox1.Text;
dr[2] = TextBox2.Text;
dr[3] = TextBox3.Text;
dt.Rows.Add(dr);
}
// If ViewState has a data then use the value as the DataSource
if (ViewState["CurrentData"] != null)
{
Gridview1.DataSource = (DataTable)ViewState["CurrentData"];
Gridview1.DataBind();
}
else
{
// Bind GridView with the initial data assocaited in the DataTable
Gridview1.DataSource = dt;
Gridview1.DataBind();
}
// Store the DataTable in ViewState to retain the values
ViewState["CurrentData"] = dt;
}
按钮点击事件
protected void ButtonAdd_Click(object sender, EventArgs e)
{
DataTable dt = (DataTable)ViewState["CurrentData"];
int count = dt.Rows.Count;
BindGrid(count);
}
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