使用DropDownLists在GridView中添加动态行 [英] Adding Dynamic Rows in GridView with DropDownLists

问题描述

hai，

当我从gridview删除行时，下拉值和文本框值被重置，以下是我用于删除的代码

hai,

When i delete the row from gridview,drop down values and textbox values are getting reset,Following is the code which i used for deleting

protected void RemoveButton_Click(object sender, EventArgs e)
{
LinkButton lb = (LinkButton)sender;
GridViewRow gvRow = (GridViewRow)lb.NamingContainer;
int rowID = gvRow.RowIndex+1;
if (ViewState["CurrentTable"] != null)
{
DataTable dt = (DataTable)ViewState["CurrentTable"];
if (dt.Rows.Count > 1)
{
if (gvRow.RowIndex < dt.Rows.Count - 1)
{
//Remove the Selected Row data
dt.Rows.Remove(dt.Rows[rowID]);
}
}

ViewState["CurrentTable"] = dt;

Gridview1.DataSource = dt;
Gridview1.DataBind();
}

//Set Previous Data on Postbacks

SetPreviousData();

}

请帮我解决这个问题.

please help me out this.

推荐答案

-按照以下方式重新编写代码块

- Re Write block of code following way

LinkButton lb = (LinkButton)sender;
GridViewRow gvRow = (GridViewRow)lb.NamingContainer;
int rowID = gvRow.RowIndex + 1;
if (ViewState["CurrentTable"] != null)
{
   DataTable dt = (DataTable)ViewState["CurrentTable"];
   if (dt.Rows.Count > 1)
     {
      // Store value in Data Table When Row is Remove From grid view
      for(int i=0;i<dt.rows.count;i++)>
        {
		if (i != (rowID - 1))
                {
		   // Make changes as per column name for data table & controls name in FindControl()
		   dt.Rows[i][colID]= ((TextBox)GridView1.Rows[i].FindControl("TextBoxID")).Text;
    		   dt.Rows[i][colName]= ((TextBox)GridView1.Rows[i].FindControl("TextBoxName")).Text;
		   dt.Rows[i][colIsActive]= ((CheckBox)GridView1.Rows[i].FindControl("checkboxActive")).Checked;;
		}
        }
       dt.Rows.Remove(dt.Rows[rowID]);
       Gridview1.DataSource = dt;
       Gridview1.DataBind();
       ViewState["CurrentTable"] = dt;

     }

}

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