how to use ViewState in asp.net

-
asp.net ViewState example: how to use ViewState in asp.net 

aspx :
 
<body>
    <form id="form1" runat="server">
    <div>
   
    </div>
    <asp:Label ID="lblCount" runat="server" Text=""></asp:Label>
    <br />
    <br />
    <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
    </form>
</body>

 
 c# :

 protected void Button1_Click(object sender, EventArgs e)
        {
            int count = 1;
            if (ViewState["count"] == null)
            {
                count = 1;
            }
            else
            {
                count = (int)ViewState["count"] + 1;
            }
            ViewState["count"] = count;
            lblCount.Text = "Count = " + count;
        }




 

Comments

Post a Comment

Popular posts from this blog

Add Serial no in crystal report without coding

-
Image
Adding a serial number in grouping without any code. I have placed the step by step screenshots which will explain easily how to do it.   1) Add a new field in Running Total Fields in Field Explorer   Give a proper name to your Running total name. For example I have choosen here RTotal0. Now categorize based on which field in database you want to summarize it. Next is as we want serial number select count. If you want your serial number to start again from the start when the value in the group changes then select on change of group and specify the grouping name else keep the default value.   Smaple Preview of the Design View of Report where I Have added SRNo column at the start in grouping section.  
Read more

File operations in C# (.net)

-
Here we are performing some basic file operations which widely needed in applications. ASPX :     <div>         <asp:Button ID="Button1" runat="server" Text="CLick" onclick="Button1_Click" />         <asp:FileUpload ID="FileUpload1" runat="server" /><br /><br />          </div> C# :        using System.IO;        using System.Text;         protected void Button1_Click(object sender, EventArgs e)         {             string path = @"E:\MVC Application Demos\ABC.txt";            // File Path taken             string name = FileUpload1.FileName.ToString();                // Here we get File Name only             string path1 = FileUpload1.PostedFile.FileName.ToString();    // Here we get File Path only             if (File.Exists(path.ToString()))             {                      //     ClientScript.RegisterStartupScript(this.GetType(), "myalert"
Read more

SQL – Generate decimal numbers sequence for particular number range

-
Image
Friends, Sometimes we need mathematical assistance in SQL for such queries. Same here, it helps me to find challenging in all the way. Some of my friends helps me out to crack the records for my query, Here I am sharing simple solution for this, ;WITH cte      AS (SELECT Cast(-77 AS NUMERIC(22, 3)) AS num –Min value from your data          UNION ALL          SELECT Cast(num + 0.00001 AS NUMERIC(22, 5))          FROM   cte          WHERE  num < Cast(89 AS NUMERIC(22, 5))) — Max value from your data SELECT * FROM   cte OPTION (maxrecursion 0)  Try it 
Read more